Hap eeay fsa ea rapenee peepee eee eee Tn La

i 2 } D CENTIMETERS

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ASELECTIVE MICROFILM EDITION | PART V (1911-1919) !

Thomas E. Jeffrey Senior Editor

\ Brian C. Shipley : Theresa M. Collins Linda E. Endersby

Editors

David A. Ranzan Indexing Editor

: Janette Pardo : Richard Mizelle Peter Mikulas Indexers

|

Paul B. Israel Director and General Editor

Sponsors Rutgers, The State University of New Jersey National Park Service, Edison National Historic Site New Jersey Historical Commission Smithsonian Institution

A UPA Collection from @ LexisNexis: 7500 Old Georgetown Road ¢ Bethesda, MD 20814-6126

Edison signature used with permission of McGraw-Edison Company

Thomas A. Edison Papers at

Rutgers, The State University of New Jersey

endorsed by

National Historical Publications and Records Commission

18 June 1981

All rights rese

index or of the microfilm may be rep form by any means—graphic, electronic,

recording or taping, or informat Rutgers, The State University o

The original documents in this edition are fro

rved. No part of this publication including any porti

ion of the guide and

roduced, stored in a retrieval system, or transmitted in any mechanical, or chemical, including photocopying, ion storage and retrieval systems—without written permission of

f New Jersey, New Brunswick, New Jersey.

m the archives at the Edison National

Historic Site at West Orange, New Jersey.

ISBN 978-0-88692-887-2

. |

—~

THOMAS A. EDISON PAPERS STAFF (2007)

Director and General Editor Paul Israel

Senior Editor Thomas Jeffrey

Associate Editors Louis Carlat Theresa Collins

Assistant Editor David Hochfelder

Indexing Editor David Ranzan

Consulting Editor Linda Endersby

Visiting Editor Any Flanders

Editorial Assistants Alexandra Rimer Kelly Enright Eric Barry

Outreach and Development (Edison Across the Curriculum) Theresa Collins

Business Manager Rachel Weissenburger

BOARD OF SPONSORS (2007) Rutgers, The State University of New Jersey National Park Service Richard L. McCormick Maryanne Gerbauckas Michelle Ortwein

Ziva Galili Ann Fabian

Pau! Clemens Smithsonian Institution

Harold Wallace

New Jersey Historical Commission Marc Mappen

EDITORIAL ADVISORY BOARD (2007)

Robert Friedel, University of Maryland Louis Galambos, Johns Hopkins University Susan Hockey, Oxford University Thomas P. Hughes, University of Pennsylvania

Ronald Kline, Cornell University

Robert Rosenberg, John Wiley & Sons

Marc Rothenberg, Joseph Henry Papers, Smithsonian Institution Philip Scranton, Rutgers University/Hagley Museum Merritt Roe Smith, Massachusetts Institute of Technology

FINANCIAL CONTRIBUTORS

We thankfully acknowledge the vision and support of Rutgers University and the Thomas A. Edison Papers Board of Sponsors.

This edition was made possible by grant funds provided from the New Jersey Historical Commission, National Historical Publications and Records Commission, and The National Endowment for the Humanities. Major underwriting has been provided by the Barkley Fund, through the National Trust for the Humanities, and by The Charles Edison Foundation.

We are grateful for the generous support of the [EEE Foundation, the Hyde & Watson Foundation, the Martinson Family Foundation, and the GE Foundation. We acknowledge gifts from many other individuals, as well as an anonymous donor; the Association of Edison Illuminating Companies; and the Edison Electric Institute. For the assistance of all these organizations and individuals, as well as for the indispensable aid of archivists, librarians, scholars, and collectors, the editors are most grateful.

1

ae,

= eee

A Note on the Sources The pages which have been filmed are the best copies available. Every technical effort possible has been made to ensure legibility.

PUBLICATION AND MICROFILM COPYING RESTRICTIONS

Reel duplication of the whole or of

any part of this film is prohibited. —

In lieu of transcripts, however, enlarged photocopies of selected items contained on these reels may be made in order to facilitate

research.

EDISON GENERAL FILE SERIES 1911

Edison General File Series 1911. Mining - General (E-11-60)

This folder contains correspondence and other documents relating to mines and minerals to be bought, sold, surveyed, worked, or tested. Included are inquiries by Edison to various suppliers of minerals, letters concerning ores that Edison might supply, requests to have ores tested by Edison, and offers to sell mining properties and mineral products. Among the metals and minerals mentioned are cobalt, elaterite, selenium, tellurium, lithia carbonate, and pumice stone. There are also letters regarding gold mining, assaying, and the publication of Edison's opinions on these subjects in the Saturday Evening Post in January 1911. A few items pertain to Edison's technologies for the magnetic separation of ores and to inactive ore milling companies such as the Edison Ore Milling Syndicate, Ltd., and the New Jersey and Pennsylvania Concentrating Works. Among the correspondents are longtime Edison associate Edward H. Johnson, geologist Henry C. Demming, and William H. Crane, president of the American Lithia and Chemical Co.

Approximately 50 percent of the documents have been selected. Most of the selected items received a significant response from Edison. The selected material also includes a sampling of letters relating to Edison's acquisition of supplies for production and experimental purposes, often for possible use in his alkaline storage battery. Other letters for which samples have been selected concern Edison's advocacy of thinly rolled nickel sheets, rather than paper made from wood-pulp, in the production of books and other printed matter—an idea publicized widely by newspapers and magazines, including the February 1911 issue of Cosmopolitan. Referrals to other vendors and letters concerning ores that Edison was not interested in purchasing have not been selected. Similar material can be found in the unselected archival folder, "Metals and Minerals."

[we | it ~ Te 5, a Clee wan Latourette c us Ure Oo = ei rece ee ‘ = ‘wel Bi

| fom Sass pide

|e Heros ttt: ey Mttomutide o ‘i

Inacey ten Jieeld trol dante ar hte im foer Fe, Is Cuete da ro wt i Fes wd Water, whet J atin

MH aan terno Hats Winch bewt, Suc, hed A net gp dts. Ore 1 Ip es

! one marth lL ‘ Ltt;

a ie ‘ / Ais jae Old ane bins tt woe ye | | fi Lh baefcds erie LS masks Peis Ie. :

lean plewrntn 8 Gub'y

Mid ditvewnens, beg tduch hr bb S$ om heh Diaeei.) je Cpe tanh seo Plead fm hate /o TI ewe, f

eer 40 Neows i

Pipe hk ot at a

AY ! : : | { ;

pice? shacts®

‘ALLYN nb BACON PUBLISHERS

SEOnOr Ae BAPE: 172, TREMONT STREET, BOSTON i

I

|

J AOHN ALLYN

January 14, 1911.

| Yr, Thomas A. Edison. JAN AG: (ave ‘(v(t !

Dear Sir:

In the February issue of the Cosmopolitan Magazine

enson reports you as saying that you can produce thin nickle

can receive printed impressions at $1. we are very desirous of purchasing from :

Mr. B sheets which ee ae: i i

you are reported correctly, you a sample pound or two with a view to contracting for ton lots in

cape we are able to adapt printing and binding machinary to the use

| | : of this material. Very truly yours, :

ALLYN and BACON,

: Per fom. Bk pe

| : os tat,” we one joer: rv - f:

| | ee pbeole e sett — ae oe - Re Ss sense te

4 : cf ase : Tne be } _

Co eae

gees Ts meee ul

e oO

4 a(enks a ig fis ! ’ \at of j ees) (or é we ol “ th w*

\ y ia ° erie we : yf ~

ot ‘ got oO We eat Le on® ae ie “ Ve 2 Street, .. | ‘ ov us a \ agate ie oe fase we

w

Se ary 16/al. f-(“¢,) pity on a oc en ers yy

I . Tyefed A. th con Seo. : ; we uM f . a4 we ue vv’ yo we Vest Orange, Ie a ad ue t Wh wt “ of we 0

4 7 { ne 3

¢ Dear Sir: 7 & I take the liberty to se =e

you herein |

enclosed a cutting from the Evaing Journal c of the 12th inst. I own 640 acres where the soil co is gold-bearing sand, varying in depth from 30 to : uv

100 feet. I hold certificates of assays from samples \v

of sand taken by myself from this property, varying in

values from 33 per ton to as high as 490 per ton.

These assays have been made by four different chemists

all of whom, and several others who heve obtsined

similar results, claim that they get these extreordinarily. ---- high results by new processes, ang that by the ordinary

methods employed by assayists, the gold is unobtainable.

These men claim that the cost of obtaining these

results would not be more than about 50¢ per ton,

that there exists a foreign element in the gand which

prevents the separation of the gold therefrom, excepting

by methods which they heve discovered.

Messrs. Ricketts & Banks of this city have also asssyed small quantities of the sand for m, but they only obtained 40¢ per ton by wet assay, and 80¢ per ton by fire assay, and ridicule the statements of the other men. As there exists many thousands of acres of the territory where these sands are, th collossal magnitude cf the fortunes to be realized, if the gold exists in the quantities claimed,and can

be extracted at anything like the cost stated, will

be apparent to you.

I am also sending you herewith eight small samples of the sand, the same as the samples which I had assayed, in the hope that you will hvve them submitted to the treatmant referred to in the press

cutting.

It appears to me it would be well worth your while to do so, as I could obtain for you a large acreage at a nominal price. You will observe from the markings on the samples that some were taken from the surface, and not any of them at from 9 greater depth than three feet to four feet.

Trusting you will accord my request, and to be favored with your early reply, I am, dear Sir,

Yours truly, ao Paz. Prcarep too ——v00CWC >

em Nee ee

Lio

William David Carhrane Real Estate

Nemark Park

. JME LZ a. Firemen’s Building ; a Top Bloor Telephone 3386 Market Newark, N. 3. _ Jan. Y6th. ' IT. Traut 4 Lue Mre Thomas Ae Edison . ain : Lievellyn Park, ' —_* eo de} . te

Dear Sir, : Will you kindly inform me if your storagd battery is likely to mako an increased demand for cobalt?

I am thinking of entering upon the production of cobal by a new process ,which has the possibility of greatly increasing// the supply of that motaljand having heard that you need this in large quantities ,I so ask the service of your kindness in reply to my inquiry. ,

Thanking you, I am,

Mag? Ve iia st

| | |

Gold | : _

ME FINANCE COMPANY pe OF PHILADELPHIA ha

PHILADELPHIA NEW YORK WALNUT & THIRTEENTH HENRY C. PALMER FIVE HUNDRED FIFTH STREETS MANAGER, NEW YORK OFFICE AVENUE

TELEPHONE 4873 BRYANT

TeLepHone 1182 WALNUT : MO git ‘

NEW YORK 6 here | - few ‘

oo” 5 4

Jamary 16, aol bg a

Mr. Thomas A. Edison, Ge e Orange,

N. J. My dear Mr. Edison: -

I read with much interest your views upon the b / “gold theory" as published in the Saturday Evening Post of last ~ - : week, It was of special interest to me in fact,for the reason that i an myself and my associates have, for two years or more, been endeavor~ ing to solve the problem of recovering the gold values from the , clay deposits of the South, The lines along which we have experi~ mented, however, have been purely mechanical, and we have succeeded to the extent of exacting from 90 to 95 per cent of these values on runs through our machines of from 250 to 500 cubic yards, This, we think,in view of the fact that by no other method employed has it been practical so far as we have been able to learn to take out more than from 30 to 35 per cent. is doing pretty well,

we have been operating one unit of our machines for the past eighteen months at the Portis Mine in Franklin County, North Caro~- lina, with the results above stated, and have demonstrated to our entire satisfaction that it only remains for us to increase the number of units so as to give us a handling capsecity of from three to five thousand yards a day and upwards, and thus establish gold mining in the South and the handling of the hitherto obstinate "saprolite" deposits on a thoroughly satisfactory commercial basis. !

It is but natural that as a result of our long and at times discouraging experience with these Southern deposits, that we should | have acquired no little knowledge of conditions from all practical viewpoints, and thet we should have received many suggestions, some | of them worthless, but not a few of them interesting, \ |

If agreeable to yourself, I should be very pleased, at any

time you may suggest, to run out to Orange and talk with you.

In the meantime I am sending you by this mail a copy of a descriptive booklet on the Portis mine and the development work : : I

_ we have done there,which you may find of interest.

Yours very truly, i hue iA | | _W ‘

ee ea, oF ioae 5 ee a |

Perfected Specialties | ‘Beney B Parrison Cs., : ) ae: |

_ PHOSPHO CREOSOTE 3 [Solves tha Cough Problem) Ma ACTURING CHEMISTS 4 North Bifteenth Street

WM Mterrae th, Levee of © enasnena, let MUL. bard: /Y Auta

HEMO GLOBULIN (taxative Organic Iron]

NUOLEO LECITHIN [ Vitallzed Nerva Food and Tonic}

JA LOY 1

_—S

Oh tb" tortie by [iat wt aor oir inde

Yi Ae

Ee

vihiin Kel a tens Boman

Be Lee Merer Iiia vo

Bee | fos

2 a

wis ca on a 2 2

c on Se \ ke 2 font por Soe Une CR rere f ot pores

deck Bylo | cpbeee Y Ut Lee oe 4

Aer = car oT “Og

Zhe ckroreteie,

ce ee

d Hoboken. t In New York City, Jersey City an eae Elsewhere 2 Cents.

New York, Jan. 17, 1910,

Mr. roenes Ae eter range oJ. ; : JAN ES 19; My dear Sir: Gus tf; /y Your favor of the 14th. in reply to 1 : letter of the 13th. inst. to hand. re We appreciate your feelings about "talking too ; ‘ much" but what we earnestly desire that you vould do for us is to give our representative the facts about the coming use of niekel instead of paper for the ae printing of books, etc. We will not quote you at all : if you so desire, : : | This is a topic of considerable importance and the newspapers will be anxious for n=ws on this sub- os " ject. Unless I get the information from you right | away on this subjeet,. soma other paper will steal a | march on me and may garble the valuable facts. | Unless it is your wish we will not quote you on the matter at all, in which case no eriticiam could possibly attach to you for apvearing too frequent— ly in print, though you could hardly do that too often for the American publie. Trusting to receive a favorable reply giving me ' ‘an appointment this week, I beg to remain, : Very truly yours,

| From E.A. Dime, Ab Biiwc | Sunday Dept. ttc Lah

a er ae.

t 4 | ead As Creme ke Ran raicane ds |

j ! { | '

TT widal Shacks

The First to Introduce the Souvenir

Publisher _o€ Copyrighted Birch Bark i

Cards, Artistle Hand Colored Cards,

Post Card In One-Half of New Art Tone Black Cards,

England 3

(lua,

To the Hon, Thomas A. Edison,

Dear Sir:-

| I am in the wholesale,local view,post card business. | and jae more than ten thousand copper plates to print from. I have | printed on aluminum and made post cards of the same,giving local views | but price of five cents each at retail did not demand a second lot. | If you think it advisable,I will experiment with your nickel. | as per enclosed clipping,with one of my copper plates. . | Please send ,with bill,five hundred’ 500) pietes,size 4" x 6", and send price of sheet nickel,size 24" x 32",in 1000 sheet lots.This size mekes thirty-two post cards to a sheet without waste.Terms 3710 d. I refer you to Bradstreets. I have hendled souvenir goods in New England for thirty years, and would like something new,on which to print local views ,and have it | ‘prove a winner like the post card. Possibly we could make pin trays, baskets or other faney articles of the sheet nickel,printing a local

view on, each and retail them for ten cents each.

Publisher of Copyrighted Birch Bark The First_to Introduce the Souvenir Fae ee eva

aac rst oe

Cards, Artistle Hand Colored Cards, Post Gard in One-Half of New Art Tone Black Cards, Amerlean England 5

Colored Cards, German Colored Cards

Exeter, N. H., "1908

_ I have handled goods with local views as follows :-

Glass, China,from Germany, Wood from Scotland, Aluminum, Celluloid, and Post Cards. ;

The last has lmost killed the others. Hoping for a letter from a very busy man at your earliest convenience,I an Yours very truly,

Frank W. Swallor. . B

[ATTACHMENT/ENCLOSURE]

St BU Wwe pe “hound in “atecl,”

{. 7 ket | a adr years ta says he, “AT sheet’ of: nickel ‘one - twenty- thousandth of .ari ‘inch: thick: {8° cheaper, tougher,.and. more: flexible than-an ordl- nary shect of book Papers,

Books of. ‘Nickel. .

contain 40,000'paxes, Buch #& book would weigh ‘only one. pound,. 1 can make a pound of nickel sheets tor’ $1.26,

.i"In a single book <gf this sort coula

be. contalned the. equivalent of 20) paner- Jeaved books-of 200 pages each. What.o Ubrary. might be placed between two steel covers and sold’ for, perhaps, $2. History,’ science," flotion, postry—every- thing. Indestructible except through fire or abuso...

“And,” sald Edison, “I could today. fill

‘tan ordor, from a book publisher for o

sheet of nickel seven feet wide and .a mile long MMP nee te eae ne

“A -niokel. book, two inches thick, would.

aA she De ee pe

2)

REAUILT SINCE THE GREAT HOT SPRINGS Fine OF FEGRUARY 25, 1905

EVERY FACILITY FOR ADMINISTER- ING THE HOT WATERS AS PRE- SCRIBED BY RESIDENT PHYSICIANS

Two GLOCKS ONLY FROM RAILWAY PASSENGER DEFOTS -

—_—_S

The Secretary to

aN

"

Oranre, New Jersey.

Dear Sirte

On page 500 of the February 1912 “Cosmopolitan” i

Thomas A..

Alhambra Bath Honse

F Ww. L. BANCROFT’S SONS, Paorrietons

The Mewest, Jarygest and Wlost Sanitary Bathing Gstablishment in Hot Springs

214 OUACHITA AVENUE

/

Ww | Hot Springs, Arck., Fanuary 24, 1#11, 4, he & Bn gah

we uit H . ;

Edison, yer cs ev Ae

“oO

ar ce ee “eG

Mr.. Benson, in his very interesting article, eredits Mr. Ediso

with the statesent that "one New York fimp is already making \

“steel furniture. No tubing is used. The various parts are

“stamped out"

woulda it be permissable to obtain throurh you,

the ;

adéress of this ‘firm?

qhe several bath houses at these Springs are, by Govertim~ ..

ment recuirement, bout. to be eouipped in part, with steel furni-

ture. We are peeking something less heavy and cumbersome than / 7 | _prevailing patterns made up of tubing with its numerous and neces-

_ sary, fittings.

“We would much eypreciate the Kindness,

could we be put

in touch with the firm referred tO. 00nd

Alhanbra Bath House Cos,

t : {

S

aN Gee Metling

Bepariment of Bands, Forests and Mines

TORONTO, 25th January, 1911.

Sir: Oeneg gus eveey APD OF

Under and by virtue of the Supplementary Revenue At, 1907, 7 Edward VII. chapter 9, which imposed a tax of two cents per acre on all mining lands in unorganized territory and provided that all lands in

arrear fgy such taxes for two years or over should, after advertisement in the Ontario Gazette and a newspaper bli CO

d in the district wkerein,t ds wepAituate, be forfejted tothe7Crown, - z£ — L. eS t EP 2

were forfeited to the Crown on the vot September, 1910.

By an Order in Council dated 22nd December, 1910, an opportunity was afforded the late owner of any such patented lands to regain possession of the same by proceeding as follows:

1. Filing with the Department of Lands, Forests and Mines

(a) Accertificate from the Local Master of Titles or Registrar that he was the owner of the land at the time of forfeiture.

(b) A certificate from the Recorder of the Mining Division that there is no adverse claim under the Mining Act of Ontario.

(c) Receipt or statement from the Provincial Treasurer of Ontario, showing that all Algoma land taxes were paid in full, viz., to 1906 inclusive.

(ad) Proof that he has performed all work or expended ail money required by the forfeited patent or lease to be performed or expended on the lands.

oO , o G_ Paying in to the said Department the amount of taxes in defau swith, gpsts and pengltigs, amigo $ /, , together with a sum equal to one dollar per acre, viz, $ o <—,in all $ .

On receipt of the proofs and money mentioned above, on or before 31st May, tgit, a fatent may issue to the person or persons entitled on the form used for lands patented under the Mining Act of Ontario,

Special provision is made for mining lands held under lease, for which you are referred to the Order in Council of 22nd December, 1910, a copy of which is enclosed herewith.

This Notice issent to you, as it appears from the records of the Local Master of Titles or Registrar, as the case may be, that you were interested in the above lands at time of forfeiture. Yours truly, THOS. W. GIBSON, Deputy Minister of Mines.

ct of Ontario, on

Mining Recorder

wo dees,

[ATTACHMENT/ENCLOSURE]

Copy of an Order in Council, approved by His Honour the Lieutenant- Governor, the 22nd day of December,

A.D. 1910.

HE Committee of Council have had under considera-

tion the annexed report of the Honourable the Minister of Lands, Forests and Mines, with reference to a number of mining locations and lots granted and leased for mining purposes, which have beon forfeited and vested in the Crown for default in payment of the acreage tax imposed under the provisions of tho Supplementary Re- venue Act, 1907, and advise that the recommendations of the Minister contained in said report be concurred in and

acted on, Certified,

Sgd. J. LONSDALE OAPREOL, Clerk, Executive Council.

To His Honour the Lieutenant-Governor-in-Council :

The undersigned has the honour to state that under and pursuant to the provisions of the Supplementary Revenue Act, 1907, « considerable number of mining locations and lots granted and leased for mining purposes have been forfeited and vested in the Orown for default in payment of the acreage tax by said Act imposed ; and that representations have been made by certain of the Inte owners of such mining locations and lands that they had no knowledge of the said Act or of the said tax, otherwise they would have paid the amount and so have prevented the forfeiture of their lands, ,

The tax is a statutory one and no notice is required, Dut as it seems advisable to allow the late owners to regain possession of their lands on roasonablo terms, and within a reasonable limit of time, the undersigned respectfully recommends that on any one on or before the 31st day of May, 1911, filing in the Department of Lands, Forests and Mines proof:

(1) That he was the owner of any such lands at the time of forfeiture ; :

(2) That there is no adverse claim under the Mining ‘Act of Ontario or otherwise; and that the land is not in default for taxes under the Act respecting the Taxation of Patented Lands in Algoma, Manitoulin, Thunder Buy and Rainy River (R.8.0, 1897, Chapter 26) ;

(3) That he has’ performed all the work or expended all the money required by the forfeited patent or lease to be performed or expended on the lands, and on his paying in the full amount of the tax in default with coats and

penalties, together with a sum equal to one dollar per acre, the undersigned be authorized to issue to such peruon o patent for tho said lands on the form used for lunds patented under the Mining Act of Ontario.

In the case of lands forfeited as above, which, though patented as mining lands, aro shown to the satiafaction of the undersigned not to have been taken up for mining pur- poses, but to have been held or occupied for purposes of pleasure or summer resort or for agricultural purposes, the undersigned recommends that on the payment of all taxes in default, including taxes under R.S.0. 1897, Chapter 26, if any, with costs and penalties, and of » patent feo of $10, and on the claimant showing that ho was the owner of such lands at the time of forfeiture, and that there is no ad- verse claim under the Mining Act of Ontario or othorwiso ; the undersigned be empowered to issue a patent for such lands in the form used for patents under the Public Lands Act, reserving the mines and minerals.

In the case of lands forfeited as above, where lensed for mining purposes, and where the lessee was not in arreor for rental, tho undersigned recommends that on the lessee at the time of forfeiture making payment in full of the taxes in default, with costs and penalties, together with « fee of $10, and on his showing that he had performed all the work or expended all the money required by the forfeited patent or lease to be performed or expended, the undersigned be empowered toissue o patent to such lessee upon his comploting paymont for tho full term of ten years, and on the form used for lands patented under the Mining ‘Act of Ontario, provided that if the lands are in a Forest Reserve a lease on the form now in use be granted instead of o patent.

In the case of lands forfeited as above, which were leased for mining purposes and were patented after the 20th day of April, 1907, the undersigned recommends that on the owner at tho timo of forfeiture making pay ment of all taxes in arrear with costs and penalties, to” gether with a fee of ten dollars, and showing that there is no adverse claim under the Mining Act of Ontario or otherwise, the undersigned be empowered to issuo a patent to him on the form used for lands patented under

the Mining Act of Ontario. F. Cocurans.

Toronto, December 20, 1910.

IRL Wel igy f VE Slassd -

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JAMES H. BONNER, i SURVEYOR

Oe La. Ele ~ (arial

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STATE OF MONTANA

MISSOULA,MONTANA .--— os ; bb Flue waathinel uron oe es

GHAS.A.HAI HI

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Qunissionens: ee MONTANA vaneon aia Holianer MISSOULA, MONTANA. any, bebgned eh, fa off Bn wbk 3

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Aol Y Piow wef Keweler, He w & petansbodtoodt, 3 1 Arthur atfect,

Yonkers, i. Y. Laon

Feb 9, 1911, Tenetiwteg te.

Mr, Thomas A, Edison,

West Orange, HH, J, CER ose rehotd&

| Lig dd Dear Mr, Bdison: ' gue?) iti Would you like to go w 4 me to i

Fhiledelphie soon to see & men who claims to have discovered a process for making gold? I have seen the men already--saw him last week on my way to Washington, Sir Willian Ramsey has been to see him, and he showed me half e dozen letters from Ramsay written since the latter's visit, In one letter, Ramsay said that a certain sample of alleged manufactured ' fold was indeed gold, and pin all of the letters, Ramsay showed an interest that he , would not have showed if his vieit had caused him to believe the man to be # fraud, I got track of the mun in tris

way; After my Cosmopolitan article about you was printed, I received a letter from a Phil- i a delphis phyétéian, telling me that your prophecy about the discovery of a metnod of of making gold had already been realized by a Philedelphia friend of his, and offering to \ put me in touch with the man if I so desired, l Before I had an opportunity to answer the letter, I received another letter from the doctor, informing me that he wae et the St Regis in New York, where I might call upon him i? I liked, I didn't get the letter until after he left town, but I aia call upon the gold man himself last week.

The inventor--if he be such--is Rudolph i, Hunter, He is & patent lawyer, with large k offices in the New York Mutual Life Building in = Philadelphia, His offices and.his business look substantial, end he, himself, ladoks to be neither orazy or crooked, I talked with m hin perhaps an hour, but I wae not quite able to male up my mind with regard to hin, That is whr I would like to have you take o look at him, I? he had claimed only to nave invented & machine ;

that would instantaneously freeze water et 2

cost of # cent for each ton of ice, I should have believed him without hesitation, T sus- pended judgment upon him in the gold matter only beosuse it is too big to be taken at e gulp,

2

If vov would like to go with me to see Hunter, I will make the arrangements to suit your convenience, The newepapers need not know anything about {t--in fact, I don't went the newspapers to know that Hunter glaims to have discovered how to make gold, pecause, if I handle the matter in a magezine article, I don't want the edge to be taken off the story by previous newspaper publication, Purthermore, if you should go to see him with me, I would make no reference to such visit, if you did not want it mentioned, in eny i magazine article that I might write, of i course, if you should see the. man and give any port of serious conpideration to his eleims, I should be gled to say so in my article, but I would be governed in this matter exolueively by your wishes, I simply would like to have your expert judgment in placing en estimate upon the man himself,

I? you know anything about Hunter's reputation, will you be good enough to tell , me what it is? I understand he has taken out : more patents than any other man in the world except three, one of whom is yourself, Is tnis 80?

I am glad the Cosmopolitan article pleased you, and thank you for the letter in which you said so, I thought the pictures were pretty good, The Cosmopalitan people thought ther were very good,

I shell appreciate it very much if { you will let me know at your earliest ‘ gonvenience whet you think of the Philadelphia man and the desirability of

going to see him, : Io FARE sme,

Youre Truly,

ifero yr

| | | |

Ge 2

WILLIAM R. PETERS, JOSEPH M. LANG, FREDERICK W. WHITE, PREHIDENT VICK PREAIDENT TREAKURER

THE PHOSPHATE MINING COMPANY HEAD OFFICE, 92 WILLIAM STREET. NEW YORK

| MINES, NICHOLS, FLA. ADDORESH TRLURGRAMK TO

PLANT CITY, FLORIDA ADDRESH ALL COMMUNICATIONS To Tuk COMPANY, P, O. ADDRESS,

Nor ro Ixpiy1pvaLn NICHOLS. FLORIDA

February 18, 1911.

CO. wes

Mr. Thos. Edison, wily

Orange, New Jersey. fuavy vy i Dear Sir,- ees We understand that you have a patented magne tic

process for separating iron from its ore. Will you please . , give us description ana prices on this apparatus?

Very truly yours,

Phophate Mining Co.

Ce

“ Chie? ‘Engineer .

A Chaim confi fran Tia octane eas

70 INSURE PROMPT ATTENTION, ADDRESS ALL CORRESPONDENCE TO THE COMPANY.

WORKS: New York ree onl Su ELIZABETHPORT, N. J. My i omioal Ge rh TELEPHONE 1650 ELIZABETH a Ne BRANCH OFFICES: C002. C770 . : 3 : i . ST. Louis, MO, 712N.SECONDST, . aa CALL, 2824 MAIN. Ney LOK e i y CHICAGO, ILL., 259 LA SALLE ST. p= “ | A & TEL, CALL, t610 HARRIBON, “ ¥ Of e | fo i fs hden cmt wy Gices 62 vod Vlean Se; |

eee Ned, Ah Eity: * Fab. 24, 1911. we —Dicbeoes GOV Fr Mr. Thomas A. Edison,

ae - - e~. \e wo Ce :

hs

As informed you @ few days azo we have aC. experi~

Ormge, N. J.

Dear Mr, Edism,

ments in reference to our ability to supply you with Hydrate of Lithium, and findiw thatthe sample which you have sent to us has Biven usa chance to experir nt only once @ twice, I would request you to kindly send me at your earliest convenience about 8 ounces of the same product, sO that we can continue and repeat the experi nts,

Your kind attention to this will be appreciated by

en very truly,

O \eraan ora Satin

eT a

| | | |

Coleus ss

INCORPORATED 1880 PRICADELEHIA

Geansyle VOUT: 4 lh Moonnyfh tM WITH, “] bo | Mampi “i114 “i Ci Wi miso f. |

SoLe IMPORTERS OF GREENLAND KRYOLITH

ADDNESS ALL COMMUNICATIONS O

THE COMPANY ja L, B 2 ve Mo Chistail Shs, Diitirdllp hia sex sin, hy, 3 | i" | ut

Mr. Thomas A. Rdison, Rast Orange, New Jersey. tate probate Elecat ond baxedle Dear Sir: - afer loo pagan te Wer i o. feo ;

We could, no donht, produge. mat 30, ee =e of ,

Ne pant cobaltic oxide in connoction with Fe Mert ue oe facts pa out,

processes hera, providing a profitable market could rie

secured for it. Ve understand that smal), q“uantpyie . | te we Pos a ee

of the oxide, in some form, are oe int otter nnd rlass . 2 each et industries as a coloring agent, ‘hale s are naga tp darn 9; : bh, pus dl & 2 {eaten Ges Ure -

any other possible outlet Lor pes Gs hought, ny gongs ly 2 eibly youg.. te

‘ Lidotorns with which you are connected, or Torte us sone informatfon

might have use for cohaltic o: ale: in sqmetolt the indusizies Sn

that would be of ansistanco to us in finding a market for

ow product. Vo are particularly eager to learn the

degreoa of purity required by the various industries.

! |

| Very truly vours,

oes a 77

‘ PRSYLY A 18 SA AG * ie ARY,

3 rT, y v¥. fo fest es

(hide pecl

S|

fo |

4 |

7.

4 | |

PHOND #8, . : P. O. BOX 20

BANTA-QWEN PLUMBING CO.,

Plumbers, Gas and Steam Fitters.

ESTIMATES FURNISHED

WIND ATILIS

ELECTRIC PUMPS Ridgewood, N. J. Maroh 15th 1911--19

HOT AIR ENGINES

Thomas A. Edison, Esq., , KAR GSS out Orange, N. J. Dear Sir: Will you kindly tell me if thore is any value tg the stock of the Edison Ore Milling Company, of which you are president? I have ten

10 shares, and I would like to know if they have any value, or is the

_ company a dead cock in the pit-

Any information you MEMM can give me along these lines will be

appreciated. Yours very resp'y,

Charles R.. Vincent.

lt cttlass "Clie pe arle,”

B cna (hbk, G (/ Heh. 4 Vom the Laboratory

Lhomus ne Cdisons QungsM ~ verch 18, 1911.

My. Cherles R. Vincent,

Ridgewood, : t lo li

lew Jersey. ace eo “t ae Y, . e ae

ey oa. ew

Lothtls

Dear “ir:

Replying to yougs “the |

= ; aA}. company was wound up many years ago. yi LC

Phe process it had, could not be made to pay.

Yours very truly,

HG Mille,

Secretary. 7ai/ITB

Mr. W. S. Mallory, V. P.- New Jersey and Penn'a Concentrating Yorks-

Orange, N. J. Dear Sir: The above doeg pos contain much infornation- I am at a loss to onsent of stockholders,

imow how a company -san~be wound up without the cs or notification of such action- Tne Farmers' oan & Trust Company ha

my address on your ledger (which was in the possession of said company. - while the writer was in its employ in 1903) and J. have never nad an notice of winding. up- The company was in existence in 1905, judging from

your letter to me dated February 24th 1902- rding this subject will be

Any informahtén you can give me rega appreciated. I. would like to have the date the company was wound up~

and also why I did not receive some notice of same.

Yours respy, é

irene

O° Rerben re

Leger &

pS \B . M. LEWIS \ CHRONOMETRICAL and MECHANICAL SURGEON

JEWELER

Me LIVINGSTON, TEXAS.. hi AT RA ile

Ibs Meat Secsion

Ce Af Crt7 ‘Uk ogo oo ae

oe au ct_harr lec chee“

wr"

B. M. LEWIS CHRONOMETRICAL and MECHANICAL SURGEON

JEWELER

LIVINGSTON, TEXAS..

ete AM ALL of =

20 LF cet”

alto touted 8 2 OeflEh og Se Zh ,

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B. M. LEWIS CHRONOMETRICAL and MECHANICAL SURGEON

JEWELER

LIVINGSTON, TEXAS,_______ I.

AML l Lech ods Cnet, Caactctnn ee es Bh Pee ee is Ltt Aegon aCe 24 ae A Mla gett Cae gid af yen Bite Ae a ME ee, Lb azn

eure, actdlcert. Was for He hey Woler Ae ae a Goole hi Mfg aT Au tacy Cee a a pee Wen tettiess out © Lalit Lgl S2 Me, fo

[ATTACHMENT/ENCLOSURE]

CoLLEGE STATION, TEXAS, Marcu 17, 1910. we

Mr. Sinn Collins, Livingston, Texas.

Dear Sir:

Herewith tind results of analysis of the material received

from you.

Silica (S:02) 72.95 per cent. | Lron onide (Fe 203) wo | Alumina (Al 203) 7B oS Manganese dionide (Mn o2)1s.as Cobalt onide (Co 0) 125“ Nickel onide (Ni 0) 7 Moisture at 110° C pee Sie Loss on ignition hao = fy oo4d1 Whether this ore would be of commercial value wou id depend on ‘its location, abundance, ete. Very truly, { J.C, BLAKE. | P. S.—Pure Cobalt onide 1s worth about $2.00 per pound; |

nickel about 40c¢ per pound,

Eee ek

[ATTACHMENT/ENCLOSURE]

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Tererpnone 1944 BROAD.

By ELKANL Manages: Capte Avoness, BEERSOND.

Dept B

AGENCY OF O0x a. F/EAD € ! BEER, SONDHEIMER & Co. (FRANKFURT A/M,GERMANY,) hess Mr. Thos. A. Edison, 42 BrRoapway, See da once! ode AN NE RK, Mar. 22/113 Orange, Nod a\vi\ \

Dear Sirs» toe

On October 16th, 1906 and January | #4; 1967 we had some correspondence

with you in regard to cobalt ores, and th ie as remembers with great

pleasure the interview he had with you severaliyears ago when you told him about the people in cobalt asking such hi, prides for the cobalt in their

ores and that in consequence you had stoppel buying their ores and made arrange. ments to buy other material, You also told the writer at the time that you thought in time cobalt would be worth not more than nickel; it will probably interest you to hear that this has come to pass and that at the present time cobalt is not worth more than nickel.

| Markie | We have a few hundred tons of cobalt speiss running about as follows: ! " , 1

: i

|

Age een e nn nee ee eS

Nie —----------~---—---7 «28

Pb, —------~--- 5 096 AS .----~--- 25060 Fe e----~--~----------40270 :

S ewe ee 7

93.92

and tho balance contains 3102 1-2% and a emall amount of antimony, Aluminum

and oxygens We expect to get a roguiar supply of 50/tons per month for the

next few ywars. oe The above assay is low and we think that the material will rm about 9% each cobalt and nickel. ——

Our works would be willing to sell this material today at the very

ee

AGENCY OF i

B.S. & CO., Messrs.___Thogs. Ase Edison_ No. 2 3/e2fil. o

low price of----10¢ per 1b; cobalt plus nickel, so that with 9% cobalt ani 9% nickel all they ask for the material is-—--—$16,00 delivered at your plant, Orangee Ye would be pleased to hear from you whether you are interested in this proposition. At any rate it will interest you to hear that yow prediction has come trues ‘ Yours very truly, MSNCY OF BEER SONDHEIMER & 00.

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B. ELKAN. Manaaen.

Terepwone 1944 BROAD. Caste Aoorcss. BEERSOND.

Dept B

AGENCY OF

F/BAD

BEER, SONDHEIMER & Co.,

(FRANKFURT A/M, GERMAN™,) 42 BRoabDway, New YorK«K, Mar. 29/11. Mr. Thomas A. Edison, . at ‘NN Orange, Nede AO

Dear Sirte

We thaxk you very mich for your letter of the 2Ath inst. and will

submit you a sample of the cobalt oxide as soon as we receive same; in the

meantime we beg to remain Yours very truly,

AGENDY OF BEER SONDHEIMER

THE HELENA LIGHT AND RAILWAY GOMPANY

Gas Liaise, ELEOTRIG LIGA? & ELROTRIG RAMWAY Sya1THims.

Pee mace Gueivanne os us HELENA, MoNnrTaANa,

pub Soe ar

ere Pgh os : oft! >

we

| Bouste- ee Melo oot

pe pi wre clhnsan a&

et tre

co lk te bes | Elasteite Jabbyits or . Wredqerte, Y Rion to

Cpe IG, Soe! Coe

rr a ee Tare Se is

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eae.

SG Meme tile

‘WM. H. ORANE, Presidont.

THE AMERICAN LITHIA AND CHEMI

OWNERS OF THE LITHIA MINES AT PALA, CALIFORNIA. (HUDSON TERMINAL BLDGS., room 1382), NEW YORK.

50 CHURCH STREET. TELEPHONE, 4430 CORTLANDT. April 21st, 1911. -)

ge ee et

ov Thomas Edison,Esq. » Nes <7 OS

P, E. FARNUM, Vico-Pres't. THEO. LUDLUM, Treasurer, FRED'K F. SCHUETZ, Secretary.

CAL CO.

Orange jl. 7. i tenor Dear Sir: (hi Hu es Referring to your recent conversation oe our Mr.

were prepared +0 contract for &

Schuetz,in which ydu said you Carbonate of Tithia annually,we

minimum of twenty khax tons of

to ask if that. offer is still open, provided we agree to

would like

commence deliveries in the very near future.

If you can yaise the minimum,kindly ao so in the way of encourag- ng us in the task of resuscitating & long dormant enterprise.

We have by actaal measurement 100,006 tons of high-

grade Lepidolite, containing the equivalent of at least 22,000 ,000

arbonate of Lithia. jon is bettering Sexy day,

lbs.of C it is probably to your

As our posit

interest to deal gerectly with us.

Very truly yours, The American Lithia and Chemical Co.,;

Wl Ve Morne,

president.

N.B.In case of haste, either Mr, Schuetz or myself can be reached bY

ay during business hours. c.

telephone any d

oh ad 7 . Rear 2 | :

be Bee ad ah Ce Ta ial Vex ds AA

e Wid, A EO ee be rer ae ee eae

EES De

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&_ Ao Zipp SE Aart Te Bursoee,

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Litt 74 Lome ae eels

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Jlez YELL 4 Te Ze Ce Hheert

4 ke CacleO

eo Aa? ; en. CLO 17 fl, lon es eer AZ clo - At OF Lifes LAT 4X SA CL fACtt MOL

DB a. , IF Ore 7 he Cheng

‘ Ebicton Clececledl Ney Gro ate laren hn Claw 5 wea Clewr~te’ ap. Lea A. a vip _ Youre oto 0 Wart LN fg 4 ter Lidl,

Up, e Ud a Ge

posted man, to my knowledge, in regard to elaterite,

DEPARTMENT OF THE INTERIOR UNITED STATES GEOLOGICAL SURVEY

WASHINGTON April 29, 1911.

OFFICE OF THE DIRECTOR

wr, Thomas A. Edison, Orange, New Jersey Sir: In reply to your letter of April 20: Mr. George H. Mulvey, Myton, Utah, is the best tabty- ite, ané wiedgerite, and I would advise you to consult him.

The Pittsburg Salt Lake O11 Co., Salt Lake, City,

Utah, may be able 2150 to give you information or to sup.

~ply you with the di sired matertal.

Very respectfully,

{ Chief Clerk.

peek A oe es Se

Ww pie “a tidy

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of ey f¥/IL. rae pt Fen + oe

a. Ve > of a fem Qar deco Qr- Concbiuator

Well, MEneE: Pas Blot oe. Llane on

We. Does: AE Rhine, elon ee.

ama e Pot ta

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|

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| | | i |

386 - wcll . 7 THE SEARCHLIGHT GAS COMPANY s CHEMICAL MANUFACTURERS

Specialties: GENERAL OFFICE: CHICAGO, ILL. REFILLING STATIONS: ACETALDEHYDE CHICAGO, DETROIT, ACETYLENE GAS PHILADELPHIA, KANSAS CITY, DALLAS

SEARCHLIGHT GAS TANKS WARREN, 0. BUFFALO,

. .

For Automobiles Motor Boats, &.

LOS ANGELES

Mav May lst., 1911. Mr. Thomas A. Edison, mt (Gy o/o Edison Laboratory,

Menio Park N. J. Mec Soy

4 Dear Sir:~

It has been brought to our attention that you are i using in your new storage battery, a nickel oxide which is light and fRuffy , presenting quite an amount of surface : per unit weight. ‘

We are not in the storage battery business, nor have we any intentions of entering the same, but we have a : problem to solve in which we want to use copper oxide ini as the reducing agent and we therefore kindly inquire as to whether it would be possible to obtain copper oxidé in the > same form as the above mentioned nickel oxide. So far our efforts to run this material down.have been unavailing and we would greatly appreciate your courtesy, if you could kindly advise us whether we could obtain this material from the same people who manufacture the nickel oxide for you, or in case you manufacture this nickel oxide yourself, if you could tell us whether it would be possible to have manufactured & same material in a copper oxide form.

Yours very truly,

THE SEARCHLIGHT GAS CO.

CONSULTING ENGINEER.

HVC EED

| : De yon wert he Rack artytnoeo fl | pe tel : |

cute af Coppet = very ye

hethin

‘WM. H, CRANE, President. ‘. P, E. FARNUM, Vice-Pres't.

TELEPHONE, 4430

Bt as Sateen SNe acereulgis se ceeeens toeeesnemeneess ee scammers ene me ccc nn a TR A

THEO, LUDLUM, Treasurer, FRED'K F. SCHUETZ, Socretary. _

THE AMERICAN LITHIA AND CHEMICAL CoO.

OWNERS OF THE LITHIA MINES AT PALA, CALIFORNIA, 50 CHURCH STREET. (HUDSON TERMINAL BLDGS., ROOM 1382), NEW YORK,

CORTLANDT.

usa | ) New York, May 3rd, 1911.

Thos, A. Edison, Esq., OMA Ua ee uit pedlnl, preecle ie: 7 4,

Orange, N. J. bs oo Low, 4 K lw ao Ti 1 + Oy

Dear Sir:- ‘ oi TN Your letter of the 2nd inst. ie at nad. I etn ew) Bae ante fo

-

€ you will pardon me when I\sugge st that ‘fou missed the point of our letter of the lith ult. Having severed siness rela-

wo Core Ge lig Uhh. Fo tions with Heller, Hirsch Pees anti the ie manulac te ae?

Hygienic Chemical Co., we are in no position to quote prices on

carbonate of lithia at the presont time. Zz. . We were in hopes that you would your way clear

to insure to us a definite part of your trade in Lithia, in order that we would have some substantial basis to encourages us in the building of an expensive and up-to-date factory.

Recalling to mind your suggestion that the apparatus for extracting Lithia is not expensive,I beg to suggest that in order to utilize the by-products in our ore and thus to reduce the net cost of manufacturing carbonate of lithia it would require apparatus and equipment far exceeding in value the equipment for extracting Lithia alone.

You can see that if we should erect such a factory and ‘then find that you had contracted for all your requirements dur- ing a term of years, we would be in danger of finding we had made a precarious investment. : :

We would be willing to make a contract with. you for

substantial amount of lithia and for a term of years, deliveries:

a ae

| ' 4 ! I

WM. H. CRANE, Prosident. P, E. FARNUM, Vico-Pres't. ‘THEO. LUDLUM, Treasurer. FRED'K F, SCHUETZ, Secretary.

THE AMERICAN LITHIA AND CHEMICAL Co.

OWNERS OF THE LITHIA MINES AT PALA, CALIFORNIA. SO CHURCH STREET. (HUDSON TERMINAL @L0G5., ROOM 1352), NEW YORK,

TELEPHONE, 4430 CORTLANDT,

TAR. #2.

to begin in October or as much sooner 4s we can get ready. It might also be to our mutual interests to sell ore to you and let you do the extracting.

Trusting that we may be able to arrive at an understand- ing that will bring us into business relations for many years

to come, I an,

Very truly yours,

YU Rr

President.

| | \ i | i

SB- nicked Casce Aporesas TITAN PITTS BURGH” WwoaKs, ' NIAGARA FALLB,N.Y.

HEW YORK OFFIC . 18 WALL STREET. LIZBER'S CODE.

THE Te ALtoy MANUFACTURING COMPANY

OPKRATING UNDER ROSS! PROCES6E&5S, PATENTED.

SALES DEPARTMENT

Biber y Gay May 6, 1911.

CHARLES V. SLOCUM, Sreciat AcEHT le28-12286 OLIVER BUILDING,

TELEPHONE £968 GRANT.

justia , K>- fet tnd | ipsgg ome re phe tlh My dear Mr. Edisons- epee CAM Anawering your esteemed favan SS Ye Niee me \ woe

just received. oo? yy? Titanium is used in nick stee tu gine we pec

oxides and nitrides, in which es agnesium ~

no influence. If your castings are entirely of nickel, you would |

Thomas A. Edison, Esqe, Orange» Ne de

require a nickel titanium alloy put if they are nickel steel, we could supply our ferro-titanium at 15¢ per pound and assure you of excellent results. In the event that you desire a nickel titanium, the price is $1.00 per pound, and we are confident that you would secure good results also but we have no data on the titanium nickel.

{I shall be very glad to give you any further infor- mation in my power at any time and thanking you for your in-

quiry, I remain Yours very truly,

Special Agent.

ae, i tue gets

1

yom

bie _eciceeth (Tove of

) Rye Ye Y Wwe vu {ren pe eck, Ny tak i Fifth Avenue, New ae

: Poo May th, 19112 C geo

MN. 9

“7 ’ . i | Thomas A. Fdison, Esq., /; ( fh be Llewellyn Park, Orange, New Jersey Z ff

aa. fs Dear Mr. Edison: wat 1 ox j } } /

I have heard you name mentioned a number of

3

times recently in conection with the use of lithia

for storage batteries, especially as the Company that is trying to sell this i#ine is located in San Diego Co., California.

Can you tell me if there is any truth to the

f | i i

stutement, so that I can deny this, if it is not so,

more especially aus great stress is laid on the fact

of the amount you are reported to have purchased. Hoping this finds you in the best of health,

believe me,

Very truly yours,

HHW t

Webra Shak

ENGRAVING COMPAR

tet

Thoma A. Edison Laboratory, Eost Orange, N. J. Bentlemen:~ We lear through magazine articles that you have @ process perfected for rolling nickel sheets ex~

tremly thin. Wevare looking for a very thin rolled

metal and if you condition we would be pleased to have you submit us

have this erticle ine marke table

prices for sheets in quantities. Wie would require the

metal es thin as the thinnest tissue. If you ere not

in position to supply this you may be able to tell us

where we can secure it. Very truly yours,

May 9,1911. Bucher Eng. & Mfg; Co.

NEW YORK OFFICE, Caate Aconess, TITAN PITTSBURGH” 16 WALL STREET. LIEDER'S Cope.

Th E TrrANIUM ALLOY MANUFACTURING GOMPANY

OPERATING UNDER ROSSI PROCES6ESG,PATENTED,

WORKS, NIAGARA FALLB,N.Y. 4

SALES DEPARTMENT

CHARLES V. SLOCUM. Special Acenr

225- eo LIVER BUILDING, thf (7 eo Letsbaaigy Ped uy 10, 1911.

TELEPHONE 2060 GRANT.

Mr. H. F. Miller, Seoretary,

Thos. A.Fdison,

Orange, Ne Je Keo ps

Dear Sir:= 7

-I heve received your valued order of the 9th inst. for one pound of nickel titanium and same will have careful attention. Ordinarily we make shipments within £4 hours but the nickel titanium is new with us and I will advise you date of ship= ment as promptly as possible.

Thanking you for this order, I remain

Special Agent.

gil Mas te

Lith

‘WM. H. CRANE, President.

P, E, FARNUM, Vico-Pres't. THEO. LUDLUM, Treasurer. FRED'K F. SCHUETZ, Secretary. } 1

THE AMERICAN. LITHIA AND CHEMICAL CoO.

OWNERS OF THE LITHIA MINES AT PALA, CALIFORNIA. 50 CHURCH STREET. (HUDSON TERMINAL BLDGS., ROOM 1382), NEW YORK.

TELEPHONE, 4430 CORTLANDT,

ae ana an Yow York,

Mr. Thomas A. Edison, 5 4 on

Orange, New Jersey. \ fin \he WO

Confirming telephone conversation Had wit vous “f ,

office this P.M., beg to state that we have been offered ¥,000 f

Dear Sir:-

lbs. of Lithia carbonate U.S.P., and which we shall be glad to offer you at 8,75 per 1b. F,0.B. New York. Terms - Cash upon

receipt of the material by you.

Should the above terms interest you, we should

be pleased to reveive your order by return mail. In view of '

the steadily rising market, we cannot keep this offer open longer |

than Friday afternoon, May 12th. , |

Very truly yours,

Beat Evehuc

Secretary.

Nos. band 17 North Third St., HARRISBURG, PA, U.S, AL

Besmyu h

LABORATORY AND OFFICES Consulting Geologist} Mineralogist and Cherlat Common. ennsylvania, OF Pot}grapher, Mineratogist and Chomiat Penn’a State HENRY C, DEMMING ighway Department,

Member Saco Club of Central Pennsylvania, Member American Geological and Geographical Society. Member American Chemical Society.

Member National Geographic Society.

Member American Forestry Association. Member American Association for the Advancement of

el u wae

Harrisburg, Pe., May 12, 1911.

Hon. Thomas Ae Edison, ‘\ has tine,

Orange, New Jerseys

: hd oe e My dear Friend: (we be: ® : t Le

Cable Address:—t Marton.”

kh

I think that bismuth can nowpe obtained Hn Indiana, Ue pe

fice ?

A.; also in Sweden, Europes LAs dead ; Sot

quae If you are still desirous os ning. gl seb ohsnes*t can L, give you addresses. yor Bet fy,

Hoping you are wee PS I sh se 7 in a yon sneispee some time in the near ibn nt ere rn of

Bese re. (uae

Faithfully yours,

prosperity, I remain

-—, 1

ChiR Hennineton

EDWARD H. JOHNSON TeL. 1424 Rector

Ss R- Rewrul- . THE SEARCHLIGHT GAS COMPANY

CHEMICAL MANUFACTURERS

Speclaltios: GENERAL OFFICE: CHICA » ILL. Pe REFILLING STATIONS: ACETALDEHYDE : f io CHICAGO, DETROIT, ACETYLENE GAS WL 7 LY PHILADELPHIA, KANSAS CITY, DALLAS SEARCHLIGHT GAS TANKS 4 WARREN, 0. BUFFALO, For Automobiles é ! Motor Boata, &o- :

LOS ANGELES

XG Chicago, Tlie, May 13, 1911.

ree a ; “ Rhee. .

S\y6\\ A . | We ree HU" (Ae 33 sans new aime Bearatll, sean fhe fe Orange, N. J. v f WA sir \ se 4 fo Dear Sir: a \* vw 0 \ v om |

Your letter of the 9th inst. to Mr, H. V. Coes a”

of the Searchlight Gas doe relative®to'nickel oxide { : and copper oxide has been referred to me for reply. .

_In connection with this matter I would state that we are desirous. of trying out both finely divided nickel and finely divided coppor in a series of experiments. : The actual condition in which we wish to have these metals ‘ is represented very nearly by the nickel lake which ~ Mr. Edison See an for the positive grids of his storage battory. “IP you have either copper or nickel in thia : shape, which we could purchase, or their oxidesin a

i form which we could produce in a metallic dondition giving us a product almost the same as the nickel Lakes we would be very glad to enter into negotiations with | you in reference to the purchase of considerable quantities |

: of the same. |

) ¥ I might say that we desire these materials to

use as "contact" substances in certain chemical operations \ and as the nickel Piake comes the nearest to giving a ‘ maximim amrfice forgiven weight,of any form, which I have yet seen, we have written to you for this information.

If you could serid us small portions, say about ‘ one ounce each of flake nickel and fake copper, if you have this product, and of the oxideb as noted above we would be in a better position to take tp the matter | further. If you send the samples,kindly forward them to me at the Chemical Laboratory, Carnege Technical Schools, Pittsburgh.

Yours very truly, aS | |

nly |

|

Consulting Chemist. i

JES Lud

sagen acy | hea leh

WG€. : fudge t Crome Pas wade a

een of

—wakebtiam a Rita praut,

WAL you ddindly wink Wa out e

: oun bap oem oplaniow of

He peta ae Rabe cone 2 ae |

paint syoorddik oe Ht opal

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Vow i factory fir ywreuitls

Oath WALL Yom Use Oo brorrele Of

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| “Pao ae Siu Weis ay, of ead

any. Ne igiin wide Pride | — ete Xia Tews eee | | dill v tea eee : Be to - |

Py mice DEPARTMENT OF THE INTERIOR UNITED STATES GEOLOGICAL SURVEY WASHING@TON

thet / fer heaton Sct (aa |

Lik we went ree | ee Fr, Miller, ee Virwe AEE kd.)

Laboratory of Thomas A. Edison,

Orange, New een a we

ear Sir:

5 —_—ern a a e

The following ens aro en,

industry in Nebraska. The addresses are those of,

main office.

The Cudahy Company, South Cmahe, Nebe fred Henning, Mendota, 111.

Very respectmlly,

Chief Clerk.

NEW YORK OFFICE, Cavite Acoress, TITAN PITTSBURGH” w IG WALL BTREET, ORKS, ‘ e UeorRs cope, NIAGARA FALLB8,N.Y. '

Twe Tirantum ALLOY MANUFACTURING GOMPANY

SALES DEPARTMENT

CHARLES V, SLOCUM. Sreciat Acenr 1226-1226 OLIVER BUILDING. TELEPHONE 2068 GRANT. Letisbeceg Pars 25,

\peoe at

Mr.e Thomas A. Edison, MY 26 in Qu 4

Orange, Ne Je Dear Mr. Edisont-

We have been delayed in sending the one . pound of nickel titanium you desired as this alloy id new with us and we found it difficult to elim- ' inate all the iron, the latter being a considerable , portion of the other alloys of our manufacture.

Trusting that you will be able to secure

satisfactory results with this sample, I remain

FAL. oy

Special Agent.

SoG

price ase TS shin ste Sie 5 eit ct Coat Ss) ene STS, ae

r | A ' ~ x ny ek | ‘ } ee / aay James GAYLEY if é 7| BROADWAY ahh

New York f a

ky" i dew York, 29th May, 1911. Qh’ tar sa et

Dear Mre Edison:-

I have just become interested in a process for sintering fine ores, flue dust and the like, as applied to iron bearing material. I am sending you a print of the machine, in which the material is fod on to pallets on a moving grate and the bottom of the grates have openings 80 that when the coal intermixed with the ore and is ignited by a burner, a down-draft is induced through the mass by means of a suction pipe. mi fibe intensifies the combustion at the start and cools the material toward the end of the oper ation.

This is the simplest device for agglomerating fine materials that I have ever seen end it is fer and away the most economical. The material being treated without disturb- ing the particles, it makes a much more porous sinter than is obtained by briquettes or with a revolving kiln, in which the particles are segregated into a hard masse The product from this machine is very cellular end that is of special advantage in a blast furnace. It permits of o lerge area of contact between the ore and gases, which makes the ore very easily reduced, and as compared with briquettes or nodules it is as

easily reduced, as coke by reason of its porosity is more easily

burned than anthracite coal. I am sending you a sample of :

nig weliniai.. alr Liew ares fons fOrreeger, Weets é MU

Mr. Thomas Ae Edison - No. 2.

This process iscertainly what you needed to have made @ great success of the magnetic concentrating proposition you had in New Jersey. I am negotiating with two magnetic concen= trating propositions and they pronounce the product as ideal for blest furnace use. I should state that in handling the sinter while it breaks up into somewhat smaller pieces yet there are absolutely no fines that would be objectionable in a blast

furnace.

Yours very truly, ff

To MRe THOMAS A. EDISON, Orange, Ne Je

! | | !

[ATTACHMENT/ENCLOSURE]

- . . ee ee ce nr 2 oer rae eae iene ee eee ie: Ge A ra ne na cake American Ore Reclamation Company, : Room 1908, 71 Groadway, P New York, ; ; ‘ : ; 5

Dwight-Lloyd Sintering Machine. (Patonted.)

{

! Orebins i Tas by

1 Elevafor

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Peep Reyer oak

of Ignition

Burner Pipe

wo, Poets Suny cathe eaeg or tee ale

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pene Be ASE pee ene DAD pe pan eee pmb pete 4 = > ;

> i

. Suctlonzfs _..) Wind box pins

LQ WHO — 22a eh

SIDE ELEVATION . SECTION THROUGH MACHINE

4 if ae

LONG DISTANCE PHONE. MINE WEIGHT TO GOVERN SETTLEMENT, ORDERS ARE SUBJECT TO STRIKES, FIRES, DELAYS IN TRANSPORTATION ry Silica” AND OTHER CONTINGENCIES BEYOND THE CONTROL OF EITHER PARTY. e Fred Henning ,

Mendota, Jil, J Le raf sat peoder oe Anas Se é 7 yal 3 211

Dhosnae asd donne Qusa $1)

Mendota, Ills. May 29tn.,1911.

Mr. Thomas A. Edison, Orangé, New Jersey. Dear Sir:

Am in receipt of your inquiry by your Secretary lr, H,.F.Miller for prige and sample of Nebraska Pumice, and am sending you by mail under separute cover u sample of about one pound. ‘This is the lightest in volwne of the pumice so far found in Nebraska, and is also running the emenest and finest in grade. The price of tnis waterial,buik, in single Can lots is $4.50 per ton, f.0.b. Edison, Nebd., or under a one to tnree year contract $4.25 per ton f.0.b, Edison, Neb. Terms draft attached to bill of lading, payable upon arrival of car at destination,

. The sample which I am sending you is very ary, and probably will contain no moisture, uue to its naving lain in my office here for a long time, thus giving it an opportunity to dry out. When it 1s shipped from tne mine it will contain all the way from 2 plus to 12% of moisture, depending largely upon the weather conditions,

The material is sold as it comes from the mine. Tne freight rate car. ‘toad, Lote from Bison, Neb. to. chicage ts 2o¢ per om nundred pounds, Your local freignt agent tiiuoutteary wil. be able to give you ‘the. ‘freignt rate “Lroki eniekgb to

LONG DISTANCE PHONE. MINE WEIGHT TO GOVERN SETTLEMENT. ORDERS ARE SUBJECT TO STRIKES, FIRES, DELAYS IN TRANSPORTATION o Sili rt ” AND OTHER CONTINGENCIES BEYOND THE CONTROL OF EITHER PARTY.

Fred Benning

Mendota, Fll.,

-2-

Orange, New Jersey. If it will be on any assistance to you, would say for your information that the freight rate from Edison, Neb. to Long Island, N.Y. is 4o¢ per on@ hundred pounds. Wew York City yard per one hundred pounds. Minimum size cur loud 50,000 to 55,000 pounds. Would mention that I am the largest shipper of thismaterial in the country, and I am in position tnereby, to fill all orders promptly.

Awaiting your pleasures, I am

very truly,

ee

FWH--MEA,

Pom tee

THE CUDAHY PACKING CO.

SPECIALTY OFFICE

365 EAST ILLINOIS STREET, CHICAGO, ILL.

June ist. 2911.

ls Je hue y ae PG Ore’d Canwé ;

Mr.H. Filliller, Secretary, laboratory Thos.A. Edison, x Fay Va ecm Segre +

Orange, N. Be Me i> Q. lo

We ara in receipt of your estaqmed favor of the P6th.nltimo, ra- garding Pumice Stone and in renly beg leave to advise that we are mailing

to you, wndar separate cover, samples of our FFF - FF & F ERICAN GROUND DOUBLE BOLTED Pviice Stone also a sample of ou RAHA FFF Lote FFF } FF } F $1.65 per c

as follows: WOAH FFF 1.90 a

Please understand that the work quotations area on smal ipments, if you are in a position to buy large quantities we would be abla jo shadg-

these quotations.

Dear aie eee

» FOB. Orde. 7

While we do not know whether or not our Punice is light weight e- nough for your requirements we believe thnt it is the lightest you M11 be

able 60 obtain.

We seed pe very glad to hear from you after you have exaniyfd our samples. ‘

Tanking you for the 4nquriy, we Ara,

Yours very truly,

GUDARY PAC. COMPANY

AGT+IHl.

Ses oaks ene

——

M57 wenobe

XK. Sehaak-Regelanan Ores, Rare Minerals, Gems, Ashestos, Gende and Filee Colephune: 137 Berond Cohle Address: Engqenius A. BG. Gude, 4th & 5th Ea. 21 State Street (Battery Park Bldg.) ieher’s Cure Mestecn Union Geode New York, N.Y. June 2nd- Fame

a ‘ 0 ef 4k me we’ J vg Thomas A. Edison, ua {ae es Orange, N. J. ae we wor e 2 Uw a oe ; : ? VD Dear Sir:- C a en ; ES ee a or ‘ & wr Pk Bismuth. Although I have not beén writing you fort nit t- : some time in connection with Bismuth, I have been busying ify” :

nearly constantly with the problem of supplying you ue I a “ quate amount of Bismuth Metal at about $1.- per 1

one time it looked as if I would be successful i tring ie you at that price, my hopes failed to realize at the last wee Pity a have since then been looking in different direction

positively state that it is impossible to get Bi gpeth

price under existing conditions. If you were al

per lb. for pure Bismuth Metal I could supply eae ts, al®

the regular price quoted now is $1.65 and above, ere i gva

that the price of $1.50 per lb. may be shaded by 10 Ea

1

ee ec a) for ae J Le .

ell a

low that no Bismuth Metal can be had, and this sha only be done by virtue of a positive guarantee th al furnished you will not, in any shape or nneng™b pharmaceutical purpossas. LS

Lithium-Carbonate. I should like ver

few more tons for either prompt or forward deli sips ould’ you\not

favor me with another little order? Believe me \ ‘Lee : oo respectfully, ,, AK | ESR/SH. - we \ |

VDOS = prrwenctG’

BH. Mehank-Regelaman— :

Ores, Rare Minerals, Gems, Ashestus, Grnde and Bihee

Cslephone: 137 Beond AN G> ‘O14 Cahte Address: Eugenins b A.B. ©. Guare, Ath & Sth Ha. 21 State Street (Matkerp Park Woy.) Ga /) Kicher’s Code Mestern Union Code

New fork, N.Y. June 5th-1911.

Cer wey &@ Thomas A. Edison, Bsq., “ee fa bool

Orange, N. Jd. y

ssc : Dear Sir:- :

Confirming the telephone conversation Thay tere with your Mr. H. F. Miller I wish to thank fou for chores ie off fs 4 1 ton of Lithium Carbonate monthly from Darton Lofeaghich ,

I understand, would be for 7 tons, quality sam © BPH 3 Ate B5# ,

per lb. freight paid to Orange. Kindly ady iy tap

to ship on certain dates of each mbht' vs Preity WM avllt your we Cor

order. ™ w a

Re Bismuth Metal. Kindly advigaywhe ther A can see your

way clear to buy Bismuth Metal at $1.35\per lb. and, if so, what a quantity you would be willing to contract for, also what percentage of impurities you could eventually allow. If you do not need a 99.9% pure Bismuth Metal I may be able to get the price down to $1.2¢ or $1.25 per lb. If you will kindly instruct me as to your wishes I will continue my efforts.

Thanking you for past considerations, I am,

for truly yours,

ESR/SH.

Romie an | »o} THe tue CUDAHY PACKING CO. i ISI WEST MONROE ST. 3° CHICAGO Sat : ae OLD DUTCH CLEANSER DEPARTMENT.

qu

fw ee . a ear aai

* eo 4 x Llonw Va Sone ee tn

on eh 2 Bt |

ROS Re Rats i !

pe an nA ~ fw 2 ptf i

weet :

ae =| a / ABTRNTION OF UR. He. F. MILENR.

mime LOth, 19311

fr Six:

We heave vow astaemad favor of June 7th ragara- ing TLunp Pumica Stone. Wa note vou desire quotation on the lightest weight of Tunp Pumice Stone. Wa hag to advise that Punice Stone in the luny varies considerable, We have & mntexial that is xather course and hard, while io te other matacial is soft and rather chalky, If you will kindly sand us a snall piece of Lump Pumice Stone which

fills your requirement best, we could then intelligently

quote you on this mtarial, also please advise the size

limps you desixa, as Lump Pumice Stone coma in lumps from

the size of a mans fist to pieces larger then a mans haad, Unon receipt of this information wa will. quote

you ow very lowest. price in car lots, material packed in

@5- pareve ls (2)

AMERICAN SMELTING & REFINING CO.

165 BROADWAY

NEW YORK June 12, 1911.

Ks T jak bon he @' sts

, Out, Mr. Thomas A. Fdison, Le q iy ik a, VLewseny Oho

Orange, N, J.

on vy und ee oo LILA es Ereker, Cu Cte ie aan re a e { Ye eat SELENIUM

= She u€. y y ; wl. Bee Urey ep eee CON Cam We are producing smell quantities SH; put CorenT Wweete © ai “sf foe could probably add to our product if there was “a denends! an CCE? CA. OD Cboue. em a for that reason we are ldéking arcotind for new uses f the article.

You are probably aware that it is a good conductor o

JOSEPH CLENDENIN MANAGER COPPER SALES

Dear Sir: Chee 6 eee

‘ght_in dark

One of our

ness, but that in daylight it loses its conduc

Directors has suggested to me that some electric 1 company may

feel disposed to investigate the matter of usi renium by equip- ping the lights in the use of Selenium so that they will go out automatically in daylight and come in agein at night.

Do you think that any of your people would be inter- ested in looking into this matter? If so, will you have the kind~

ness to present it to them for their consideration? Yours truly,

IGAN SMELTING & REFINING CO.

fie

_aaemines

ie

ae,

|

i eee

NIGHT LETTER THE WESTERN UNION TELEGRAPH’ COMPANY

INCORPORATED

aie |, 26, 000 OFFICES IN AMERICA CABLE SERVICE TO ALL THE WORLD

This Company TRANSMIES and DELIVERS messages only on conditions Umiting ‘tts Mablitty. which have been assented to by the sendce of the following Night Letter. Erron oan be guard rainst ynl: 33, ae ne & tucsuage Uiwk ty the seading statlon for comparison, and the Company will nut botd dteelf Mable for errors or del taye i transmission of delivery repyate ht Letters, vent at reduced rat FoR asUmn equal to ten Clue the amount pli for teansmission; nor hs aGy CANE beyond the must of Fifty Dolluty, at wh! unleas vated Sie stated below, this message tax been tulued by the sender thereof, nor In nny ease where tie elalin it not pres raentod In writing within witty days alter the mess, ! ve reas ye thy. {or transmission,

This Ie an CNRED PD NIGHT LETEER, and is delivered by Feauest of the sender, tinder the Conditions named nbowe. » THEO.-N. VAIL, PRESIDENT

2 Fortn 2280 B,

, BELVIDERE BROOKS, GENERAL MANAGER

RECEIVED AT

abril,

a UAnLd ue Toro. onkenalle 1 roils or wort, hoes eet

ae,

S

/ R : bbb delves; Crrleoniy Teliplione \ Sty | Cotlandl AE: CGode- EC lin ee [SUS | LelorseWeslirnVouon

so reas Ae de

Ypiv L20-Siterly Se

Pre Meeviod Melilb- “Tilo 2 regen Os fy evil, Fromsscllhiys en ¢ os tA ‘ GO Men ak, J Ce vee

“Yorn: Seung Yinrelles tng’ Prrecssey/ e. te. M's Con, n 3.1911 : we pic ’ Klan Vee a) WR. THOMAS A, EDISON iL y fo ORANGE, NEW JERSEY. re on we ete ne ee ee JUN 14 G| | :

‘a MY DEAR SIR:= Gisaa bf

In reply to your favor of the 12fh inst., re SELENIUM, I would say, I will divide the package and send you 5 lbs., as early as possible this week. Re TELLURIUM, you fail to answor my inquiry as to whether you desire to purchase the 90 pounds, which I have on hand, or any portion of it.

It will not be necessary for you

to take this all at once, if you do not desire it, but as

we are about to make a change in this direction, it is

more than likely that we will be unable to sell you beyond this amount; therefore if your experiments with it have been

satisfactory, you had better take advantage of this oppor~

tunity.

Your. truly,

Bune. 4) (eo LEP

A prompt reply will greatly oblige, | || ; |

National Hydro-Carben Company,

— INCORPORATED,

OwnERS AND PRODUCERS or hem Grave Hypro-OGsrsons VaNwURACTURERS Cory Comrounns.

EASTERN OFFICES

Henry W. OLIVER BUILDING, '

PurrssuRs,Ps. e w June 14, ey

“ev

os Orange, N. Jd. ; \ Dear Sir:- Wosed

Your kind favor of May 2nd, addressed to Mr.

A (yr

Mr. Thomas A. Edison,

George H. Mulvey, our Field Manager, at Myton, Utah, has peen referred to this office for reply. We note that you ask the address of parties who can supply Elaterite, Tabbyite, or Weiggerite. We are owners and producers of the above named substances, including Gilsonite. At the present time we are not ready to market our materials, but have several cars of Elaterite that will be ready for shipment in the course of 60 days. If you are interested in Elaterite, Tabbyite or Gilsonite we will be pleased to furnish you samples and quote you our prices on same. Thanking you for the inquiry, We beg to remain, Very truly yours,

NATIONAL HYDBQ-CARBON COMPANY.

S-: = Y President.

ETB/B

a: Ps wr

ao,

foom

"same quality of miterial,

HY PACKING CO. f Sing THE “nen vee ST. ; pe

<s seca mae glo Boo 3 a

wee June i ‘

6

Thomas <A. Rdison = , ~ Orange, N.d,

Dear Sir:-

ae ‘i tn

; Yle have your esteeméd favor of o o; June léth, together with samples of LUMP PUMICE ({ S2ONE. Our UMS PUMICE, Inown as AP/SPT is an exact match for your samples, which we quote ee

at 4g per pound delivered. “his material is Dea a filed lwp. Shoulda ron be in position to_-~ 2 e

a“

use LUMP PUMICE STONE wifi led, we world then

he enabled to quote eousiderable moves 07 th We guarentee every/ pom this

material to be light, fine and yet 5

grit or foreign substances of

In order that yo ; teat this miterial before purclha we eonld furnish, say, 5 casks as

valued order, and thanking you in some, we beg, to remain,

Yours very truly,

THE cope a

CAB-IH

le

BS -rreals (?) 6 | i

AMERICAN SMELTING & REFINING CO. 165 BROADWAY

JOSEPH CLENOENIN NEW YORK

; \ MANAGER COPPER SALES bps x a wr

Mr. H. F. Miller, Secye, 1, a we \ Thomas A. Edison, Esqe, be ic . ce Orange, We Te Cw

Dear Sir: Vs ‘ y vad yr’ “é fr We have yours 15th inst. and will be glad & “fur

you with small lots of the metals sepcified: l we Tellurium at $5.00 per lb. / Seleniu " 4.00 "

delivered at Orange, cash. As @ matter of information would you be | kind enough to advise us the price you are paying for the Tellurium and Selenium you advise having just ordered. We are greatly inter- ested in extending the use of Tellurium and Selenium and, in fact, ' any other metal which may be found associated with Gold, or Silver,

or Copper, or Lead ores which are coming into our various plants,

and we think it will be to our mutual interest that you keep us in-

formed as to certain of the rare metals which you can make use of

in a commercial way, and we will at the same time undertake to ad=

vise you as to the metals which we can recover. We are aiming to

produce all of the rare metals which may come into our plants and to

find markets for same here and abroad.

ern

Cope rae ee

H. FP. Me = 2

Awaiting your answer as to price, end hoping you will find it to your interest to keep closely in touch with us in this whole proposition,

We are

Yours truly,

ICAN SHELTING & REPINING CO., as Yosser . j a te

ce/7s

|

S.F. MAGRUDER, CAsricr. GEO.D- POLLOCK Present, ALB. MONTGOMERY, AssiaTant Canwicn

American Bark &Censt Company

N Caprrar $500,00092 a

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YLA Cor" LE ee. ages Qawes ctuteets

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Loe ther, ®! cata et 7

\

MOME PHONE 1400

ENIAM MIN Gn AUNTIN

THE CENTRAL BUILDING CO.

SUITE NO. 6 GRANT BUILDING 1038 FIFTH STREET

: (4 San Disco, ofG Gs op he CL Clee pst _ ep a) ae

oo ae

Lt bs BELL OL y ee Cue Laz Z ois Rivleas ° i pps Lhe PS coroaled Me Lede p AE Ailey g ea “teelil os Fes Cxe¢, Doe Se Ae ae Mil y Ley Lit. orto. Ly fOr “bh! LD, Sarl Wiscg 0 ae OPt<q-, AY be tl Gar . ts Sel o Wie An CWC (ATE EtCttce sree Vat. oe ae

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‘THE EDISON ELECTRIC ILLUMINATING CO. ' OF BOSTON. ug Vee |

General Offices, 39 Boylston Street.

Boston, Mass, July 10th, 1911

Thomas A. Edison, Eeq. Ny Orange, N. Je “hey

My dear Mr. Edison:

I enclose a letter to you which came

LY

here with request that I should forward it.

{The letter was placed on our Mr. Steven's desk by one of the mail carrier boys, and the former with- out carefully noting the address opened it, for which I trust you will pardon him, as it was entirely a mistake on

his part. With kind regards, Yours very truly, t hop Pree PURCHASING AGENT.

P.8. I drove out to Lawrénce yesterday and met Col. Bailey with hie new electric Runabout, which he had driven down from Amesbury.

The Little car looks very favorable to me, and Z think

4% will be a good one and a “vinner® for business purposes. This is the car we are having developed to replace

gasoline runaboutes, and it is to be a speedy one. It

rides beautifully, but the Col. has a little defect in the atearing gear to work out, which does not seam to be a very d4fficult problem.

The Col. also has an order from us for = four~ passenger oar of the same general type, which he will build as soon as he gets the two-passenger finished.

¥.H.F.

wee a,

a

} We &, STEVENS

: JUL 10 1901 ge L

| |

bey Lover Pesan oS

[ATTACHMENT/ENCLOSURE]

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[ATTACHMENT/ENCLOSURE]

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SUBJECT.

IN REPLY REFER TO FILE NO.

7

Dear Si G/ we |

Ye have noticed in this locality amongst our workmen a mumier of cases showing neurotic symptoms, that, on casual inspection might be classed under the head of “locomotor-ataxia’but whieh,on careful inspection, have been defi- nitely determined to be leaching some of the cheracteristic syme+ toms of that discase.. careful compilation of the history of cach cese shows that each individual, thus aiflicted, has at sone time or other, worked on the separator tloor;and no case has been found amongst those who have never woreda there.This may be merely & coincidence or a significant fact.Some of the symptonc resemble reported cases of manganese poisoning, put it is not clear that the sevarator men are any more exposed to manganese dust than are the men working in the crusher-house or the dust-house.The carlier

symptoms appear as a loss of locomotor controll,'a slfiflip of the

feet, and in some cases later on senile degenerncy.d4s most of the

a

symptoms are neurotic, and as the cases appear to be conitined to

those who have worked near the magnots,it occurred to me to ask if you had noted any sinclar symptoms in men working in high

magnetic fields.Our magnets have as high as 1v0,000 ampere turns

Yours very truly Yell Lawl en Begel:

i \

Grnot w LABORATORY AND OFFICES wealth of Pennsylvania.

Consulting Geologist, Mineralogist and Chemist Common-

OF

HENRY C. DEMMING

Nos. 15 and 17 North Third St., Harrtssura, Pa., U.S. A.

Cable Address:—'' Marion,”

Harrisburg, Pa., July 25, 1911.

Hon. Thomas A. Edison, /V * Nu: |

Orange, Ne Je i ep eH Friend Edison:

I notice by a Colorado daily paper that your services have been secured for the purpose of sip emenvation with various ores at Idaho Springs, Colorado.

I hope you will be successful,--and I believe you will be, i? there is any conmercial value whatever in the ores that have been or are to be submitted to you,

I have been called to Colorado twelve or fifteen times during the past ten years, and have great faith in the mineral wealth of that State; but I have no personal interest in any of the proper- ties in or near Idaho Springs.

Faithfully yours,

i cr Ea)

)

ete |

| FORM P-1467

aie Electric & Manufacturing Company

} Works East PitTsBura, PA.

G, M. BATES, BOARD OF TRADE BUILDING, DisTRICT MANAGER fe : BOSTON, MASS.

IN REPLY PLEASE ADDRESS THE COMPANY

AND REFER TO... cecceesssssserennenres

. Jai Aug. 8, 1911. (sr

Thomas A. Edison, Esq., Menlo Park, N. Jd. .

Dear Sir: Prom time to time there has appeared in the newspapers

accounts of a nickel paper invented by you which is said to be very thin and durable. Will you kindly advise us if this paper is being manufas- : tured by any concern at the present time, and if not 30, what steps would it be necessary for us to tuke to obtain some information on

the subject. ; .

We have in mind stendardizing the size of all of our cat-

alogues, price-forms, and engineering data sheets and it is desired +o obtain as thin a paper 4s possible so that the bulk of the com-

pined catelogue will not be unwieldy.

In replying, will you kindly address your letter to the

ARE BINDING FOR 20 DAYS ONLY

APPARATUS LISTED ON STOCK REPORTS IS SUBJECT TO PRIOR SALE

R ARE SUBJECT TO OUR REGULAR FORM OF PRINTED CONTRACT AND THE NEGOTIATION NUMBER MUST SE NOTED ON ORDER TO SECURE PRICES QUOTED

attention of the undersigned? Yours very truly, : |

Westinghouse Electric & bifg. Co. : |

rer \(V Wi 4a,

wwH/D

ALL QUOTATIONS OF $1000.00 OR OV:

FOR 20 DAYS ONLY AND QUOTATIONS OF $1000.00 OR OVER ARE SUBJECT TO

ALL QUOTATIONS ARE BINDING

ee Si EE OR ee EL al ameumnucalaaat | | FORM 1467 |

Westinghouse Electric & Manufacturing Company “ Works, East Pittsburg, Pa.

G, M. BATES, BOARD OF TRADE BUILDING

DistRicT MANAGER

BOSTON, MASS. IN REPLY PLEASE ADDRESS THE COMPANY \\ 8/21/ll. AND REFER TOnendottee si i f!

LABORATORY OF THOMAS A. EDISON,

ORANGE, NJ. Attention Mr.H.F.Miller, Sec'y.

Dear Sir: We are in receipt of your valued favor of Aug. 17th ana thank you very much for the information contained therein.

We note that you are not at the present time putting sheet

a 8 nickle on the market, andwe beg to inquire if it would be possi- 4a e3 ble for you to allow us to manufacture this ourselves. We, of oe ses course, presume that we would have to build the necessary machinery Beg Be to ado this, but the size of the sheets we would desire would not S38 ges be over 84 x 12". bo eps We should like very much to have an expression from you $248 z= regarding this. Would it be asking too much for you to send us osu gas a few samples of the nickle paper 89 that we may see just what it 22 Bee is? ge ° a2 Yours very truly, Eo ge WESTINGHOUSE ELEC. & MFG. CO. ao [ | =» OW | z q g : WH: AM.

Pcs oh deny so metas *

ye gree : at or maples eeee

fos a qeytoncne’ : Tee Cable ADDAESS cS. Yaar 2500 CONNECTIONS IN ALL THE LEADING FOREIGN COMMERCIAL CENTRES Kaymack CHicaco . *

A. D. MACKAY a INDUSTRIAL MINERALS \ all foo" It

AND RAW MATERIALS \ s OE t

: . 4139) FIRST NATIONAL BANK BLDG, yy

ae we

v

Curcaco, Iu, 5/2 a7 /

ABRASIVES Silica Flint Corundum Volcanic Ash Tripoll --. Infusorial Earth Rotton Stone

CLAYS 4 Kaolin Bauxite Fallers Earth Fire Clay Magnesite Potters Clay

“Whiting iiss IMS AND ASPHALTS * Gllsonite

Elaterite Oxokerite

te

ores

Antimony Arsenic

Bismuth Chromium Cobalt Cadmium Fluor Spar Lithium Molybdenum Platinum Tin Titanium Tungsten Uranium Vanadium Zircon

SAND White Silica Colored Silica Filter Sand Glasa Sand Fire Sand Sand Blast Sand

Moldera Sand

MISCELLANEOUS

Mica, Tale Graphite, Mangances

Soapstone

Barytes Tron Oxide Sulphur Boda Ash Glaubers Salt Fertillzer Materials Stock Food Materials Fibres

[ATTACHMENT/ENCLOSURE]

eS a

/ 2 ; Ut f4E S yh fof

Cok i 4 Chicago, Oct. 31, 1911. Ee beh Q O67 b" Freeverse,

Rebert-Av:Bachmany..58d., “EeTeper, Edison Storage Battery Coe, Orange, N. J. a) Dear Sir:- bie eas

We enclose sample wf ihe ‘Cobalt Nickel Residue /. as now produced (see analysis below) and would be pleased to know whether or not you can con- tract for all or part of an output of 3000 lbs. per day at a low delivered price.

Very truly yours,

1139 First Nat. Bank Bldg.

A. D. MAC KAY 1189 First National CHICAGS, industrial & Bare Migerals

ee ais

BILL OF SALE. Nive Swen need odes chews annenweenn Randolph Perkins, Receiver,

os To

\ © Thomas A. Edison.

RESERHEHEHHHHE EHF ELEHHHHR EN KEP HEH

1 . , F, —? ie : Dated vay Le LI

FERS EE ZORA RE HEREREHBHRKHHERED

eo

° |

Gg eee seeye peaezer STRAT ne TT RR ae 7 seperate PERS I ae : Fe + dé

a"

|

oleae |

M Hackget | : ! Ate

KNOW ALL MEN BY THESE PRESENTS, That I, Randolph Perkins, Receiver of the New Jersey and PSnnsylvania Con- | centrating Worko, a corporation organized under the laws of New Jersey, having been appointed by the Chancellor of the Btete of New Jersey on the twenty-fourth day of February, Nineteen Hundred and Eight, by virtue of an order made by said court on the fifth day of June, Wineteen Hundred and Pleven, authorizing me to accept a bid of Bixty Thousand ($60,000) Dollars offered by one Thomas A, Bdison, of the

Township of West Orange in the County of Essex and State of Hew Jersey, for the entire assets of the said corporatden and in consideration of the aforesaid bid and the sum of One Dollar to me in hand paid by the said Thomas A. Edison, have, sold, assigned, transferred, and sot over, and by these presents do sell, assign, transfer, and set over unto the i gaid Thomas A, Bdison and his assigns, a certain claim, which| . appears aos an asset of the said corporation, against the New

York Concentrating Works, a corporation of the State of New

|York, for materials and supplies furnished then, for the sum

lof Sixteen Thousand and seventy polars and seventeen cents ($16070.17) with interest thereon from November thirtieth, ; Wineteen Hundred and Five, and also all-myright, title, and | interest therein which I hold by virtue of my appointment | as Receiver, and i do hereby constitute and appoint the said | Thomes A, Bdison my true and lawful attorney in my name and for his own use, to demand, receive, prosecute, sue for,

eompound, release and discharge the same at his own costs and

charges as fully as if I were present and acting therein and | { Le k 5 :

Bow yeRT awuye Gosia

frie BBVQENE! meee op? peueworins

: ij hes \ I do hereby ratify and confirm all his lawful acts in the premises. - IN WITIBSS WHERKOP T have herounto set my hand and | seal this Hiri ay day of Agee ¥— Nineteen Hundred and Eleven, 1 \ Bigned, sealed and delivered z Lf A ai ; Oe aes 7 ; in [the presence of? Bln Li 2 — | \ \ t + ; } i : | | :

rece

hentai a Se

BILL OF SALE. SHHREHAESE REDE HH RAHERRESEOBYL OHNE H Randolph Perkins, Receiver,

To

Thomas A. Elison.

REESE HHERAR E+E OHNE HEHE AEE ED

Dated

Z LAROR HEED TOE US

x AF,

ARAEWD HOH HRD HER §

"

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i

“i

‘

a i

thenm

oo iM :

(OOO meccre neememamen ene Pea reper arene sgeiceeptgedtiiee BASE sh pipe tes mpemeeerinradtirn Senne oe g onten s Sao

* oe

w ’

KNOW ALL MEN BY THESE PRESENTS, That I, Randolph Perkins, Receiver of the New Jersey and Pennsylvania Coh- centrating Works, a corporation organized under the laws of New Jersey, having been appointed by the Chancellor of the State of New Jersey’ on-the twenty-fourth day of vepruary,

MNineteon Hundred and Eight, by virtue of an order made by said court on the fifth day of June, Nineteen Hundred and Eleven, authorizing me to accept a bid of Sdxty Thousand (860,000) Doliars offered by one Thomas A, Edison, of the Township of West Orange, in the County of Essex and State of New Jersey, for the entire assets of the said corporation | and in consideration of the aforesaid bid and the sum of one dollar to me in hand paid by the said Thomas Edison, have | wold, assigned, transferred and set over, and by these i presents do sell, assign, transfer and set over unto the said Thomas A, Edison and his assigns, 4 certain clain, which appears as an asset of the said corporation, against the Edison Portland Cement Company, a corporation of the State of New Jersey, for materials and supplies furnished

‘them, for the sum of Nineteen Thousand Nine Hundred and

\Bighty Five Dollars and fifty-four cents ($19,985.54) with interest from Necember thirty first, Nineteen Hundred and

Seven, and also all my right, title, and interest therein which I hold by virtue of my appointment as receiver, and I do hereby constitute and appoint the said Thomas A. Edison

my true and lawful attorney in my name and for his ow use,

to demand, receive, prosecute, sue for, compound, release and

discharge the same at his own costs and charges as fully as

if I were present and acting therein and I do hereby ratify and confirm all his lawful acts in the premises. : IN WITNESS WHEREOY I have hereunto set my hand and

etna ican

| ie

=

peal this ~~ Zan

Nineteen Hundred and Signed, Sealed and Nelivered

in the presence of:

eo

|

vem 1

BRILL OF SALE. AEN EN NEN E ROE O NEURONE EE t

Randolph Perkins, Receiver, | ; o ‘

Thomas A. Kaioon. |

PITTS TESTE tree eee:

"pated GHG OO ‘Pp ehen een eee Knenesecssanannanne!

< : : ay : 4 i A a RE AT cea Sar ke ols cate ee SSR ed

enn

KNOW ALL MEN BY THESE PRESETS, That I, Randolph Perkins, Receiver, of the New Jersey and Pennsylvania Con- centrat ing Works, a corporation organized under the laws of New yersey, having been appointed by the Chancellor of the State of New Jersey on the twenty-fourth day of February, }ineteen Hundred and Eight, by virtue of an order madc by paid court on the fifth day of June, Nineteen Hundred and Blevon, authorizing me to accept a bid of Sixty Thousand ($60,000) Dollars offered by one Thomas A. Edison, of the Township of West Orange, in the County of Essex and State of Now yersey, for the entire assets of the said corporation and in consideration of the aforesaid bid and the sum of one dollar to me in hand paid by the soid Thomas Edison, have

sents do sell, assign, transfer and set over unto the sald Thomas A. Edison and his assigns, 2 certuin claim, which appears as an asset of the said corporation, against the

Edison Storage Battery Company , a corporation of the State of

New gersey, for materie:s and supplies furnished them, for

the sum of Thirteen Thousand Bight Hundred and Bighty-Seven

from February eleventh, Nineteen Hundred and Five, and also all right, title, and interest therein which I hold by virtue of my appointment as receiver, and I do hereby constitute and appoint tho said Thomas A. Bdison my true and lawful attorney in my name and for his own use, to demand, receive,

Iprosecute, sue for, compound, release and disoharge the sans

lat his own costs and charges as fully as ig I were present

@ acting therein and I do hereby ratify and confirm ail

sold, assigned, transferred, and set over, and by these pre~

Pollars and Fifty-One cents ($13,887.51) together with interest

=

| Signed, sealed and Delivered

in the presence of:

de Mt

AOS: VED CREA BA WH TE SUNG

hig lawful acts in the premises,

aaa LU. SSevUDAT AUT E Oyen

syn b

Spocg? mengoresy

IN WITNESS WHEREOF I have hereunto set my hand and

seal this —/.i.t

Nineteen Hundred and Eleven,

A othe pL

~ eee e vet CiL LY Coke

day of hips tees

Cc) a? obpte OL Le,

Oc eb t C2 ep ate sh athens

LD

| | |

WM. H. CRANE, President. P, E, FARNUM, Vico-Pres’t.

THE AMERICAN LITHIA AND CHEMICAL CO.

OWNERS OF THE LITHIA MINES AT PALA, CALIFORNIA. $0 CHURCH STREET. (HUDSON TERMINAL BLOGS., ROOM 1382), NEW YORK.

TELEPHONE, 4430 CORTLANDT.

quell : New York, September 8th, 1911. Mr, H. F. Miller, Edison Laboratory, .

Orange, New Jersey. Dear Sir:-

Pursuant to our conversation of Wednesday afternoon, will you kindly let me have a letter, on the lines suggested, in regard to the present status of the lithia situation so far as relates to the Edison Battery.

Mr, Edison's telegram, copy of which I showed you, Was sent on or about June 14, 1911.

Appreciating the many courtesies extended to us by- you, I beg to remain,

Yours very truly, oe KLhu Gehl

Secretary.

THEO, LUDLUM, Treasurer. FRED'K F, SCHUETZ, Secretary.

4.5 ft i at dete ee Spy tllrudonps Yuli vl Sororiat C4 ILA); pecudecrnype lhithone Call t OO09 Brad. Calle Meters

RWevituid Bosient? Sin nytoalee Nee Yorks

Ay Stirs fll! Tocusearer Y Y WA : Cotte fOIF/ September L 3

As 4b (w’ isa ah (he

or te Edison Laboratories, o ay gf” v e é " Weat Orange, H. J. | fy Dear Sires:~ . @ ie by L we jt

European frieais of ours have Keart that you will use lazge quantities of Lithia an one of your new inveations, and they would like to knew if sueh is the ease. We would thank you to please anawer this question.

Yours very truly, MEPALIQRGTIOAL COMPANY OF AMERICA Kia es

me/iH

2 a ee

Form 57.

1979D

+ BLD/ Iwi F. L. D.

07 Mu Lene : THOMAS A. EDISON, Incorporated ¢ :

Soptember 28, 1911.

ir. Harry i. Miller:

I return herewith letter of the 15th inst. from Mir- Maw, Liquidator of the Edison Ore-iNilling Syndicete, itd. This matter can rest until ur. Edison returns, at which time he can sclmowledre receipt of the siingot £527/10/0 which the Iiquidator hus pleced to the credit of his account.

It evrears from ir. Maw's lettor thet this credit hes been given only in connection with the fully-;eid sheres of ir. Edison. It avpeers, however, that there are still 6833 partly-paia shares which, if they were fully peid, would bo entitled to a roturn of £170/16/6. ir. Haw sug- gests that if ir. Edison will send him a check for £157/6/0 he can give the credit on the partly peid sheres and wipe | out the entire indebtedness. This is not made as ea formal demand, and I imagine thet “f Mr. Edison See ee ube nezt return will be enough to clean up the entire transection, put if Mr- Edison wishes to wipe the slate off clean now, he can do so by paying 2£157/6/0, so that there will be no fur- ther claim on him. Then, if any return i8 made, which & understand is to be expected, it will come to him as cash.

Ploase send Mr. Maw the various certificates re- ferred to. Perhaps it would be well to forward these through Sir Ceorge Croydon Marks, who can see that the proper formal-

ities are attended to.

| ! |

Eno-

| eo

FOR 20 DAYS ONLY AND QUOTATIONS OF $1000.00 OR OVER ARE SUBJECT TO

OUR REGULAR FORM OF PRINTED CONTRACT. APPARATUS LISTED ON STOCK REPORTS IS SUBJECT TO PRIOR SALE. THE NEGOTIATION NUMBER MUST BE NOTED ON ORDER TO SECURE PRICES QUOTED.

ALL QUOTATIONS ARE BINDING

eS

| FORM 1467

Westinghouse Flectric & Manufacturing Company Works, East Pittsburg. Pa. : G. M. BATES, SEED SESTED District MANAGER 20! DRVANT n BOSTON, MASS. IN REPLY PLEASE ADDRESS THE COMPANY AND REFER TO. ADE ercrne Oct. 11, 1911. , LABORATORY OF THOMAS A. EDISON, f ORANGE, N.J. nee eat

Attention Mr.H.F.Miller, Secy. Gentlemen; The writer notes that Mr.Zdison has returned from his trip abroad, and we would appreciate it very much if you will take up with him the matter of nickel paper which is covered by our correspondence of Aug.17-21-24. Will you kindly give the matter your attention at your ,

convenience, and oblige,

Yours very truly,

WESTINGHOUSE SLEC. & MPG. CO, BY WWH: ALI.

| |

(url4

Edison Co. Inc. Cctober 13, 19i1.

San Diego Cal.

Orange, New Jersey. Gentlemen:~ I understand that you are in the

mar'ret for LITHIA and as I have discovered quite a lode TI wish to get your highest prices you pay for such meterial. Would you buy the Lithia rock (or Lapetalite) as it comes from the mine or would you want the LITHIA SALTS ? How much would you take # by the month ?

Give me full particulars in regard to the grade you puy and any thing else that would benafit us in our dealings with you,as to the business in question.

Thantting you in advance for your trouble

I remain Yours ee

ih LOB BOE Ea

Ca MT o=St. San Diego Calif.

> z Chae Canny “4 {othe “ wae Wn of Y Casberete | Fale ;

Aes ee i ge OY —

Pp he"

ee Ge. Cecogerk en

sc oe —

Ao

eo coves at a Vor} fLRL

aS

Te pene pe tiow of

Wee - 2 ‘ at ote ject & ; at G “Cn Qabecut Kf Mee

Le rom te Oe Bale in

ot a Le

FOR 20 DAYS ONLY AND QUOTATIONS OF $1000.00 OR OVER ARE SUBJECT TO

OUR REGULAR FORM OF PRINTED CONTRACT.

PPARATUS LISTED ON STOCK REPORTS tS SUBJECT

ALL QUOTATIONS ARE BINDING

Jee Bat Sate : | FORM 1467 Westinghouse Electric & Manufacturing Company

Works, East Pillaburg. Pa. BOSTON SAFE DEPOSIT & TRUST CO. BUILDING

IN REPLY PLEASE ADDRESS THE COMPANY BOSTON, MASS.

AND REFER 10.0... EL Octoher 21st, 1911.

G. M. BATES, DisTAict MANAGER

> DABORATORY OF THOMAS A. EDISON,

j Orange, N. Je Jae

ode ey ss. ae

Attention of Mr. HeF.Miller, Secy. lf oo ¢ eh

Dear Sir:

The writer has not as yet had a reply from you. to his letter of October 11th, and would appreciate it. very much if you will advise us whether it is possible to open a negotiation with Mr. Edison relative to his granting us the rights to make

nickel paper for our own use.

TO PRIOR SALE.

Will you not kindly advise us on the matter, and oblige

TO SECURE PRICES QUOTED.

very truly yours, WESTINGHOUSE ELEC. & MFG. CO.

w W. YW, Sfa02_

WWH/Q

A THE NEGOTIATION NUMBER MUST BE NOTED ON ORDER

| ! | \ | 5

Po Mo Vitae, = ZA esa aneeby

CLYCE H. WILSON, PRESIDENT

DIRECTORS CLYDE H. WILSON WILLIAM J, MGLAUGHLIN FRANK L. WILSON WILLIAM F. WILSON M, M. MOLAUGHLIN

(us uf

Thomas A.Edison,

Orange ,N.J.

WILLIAM J. MCLAUGHLIN, Vice PAESIOCHT FRANK C, WILSON, SEG. AND Tacas.

Pilson Consolidated Mining Co. Ee

MINES IN CLIFTON AND WILLOW SPRINGS MINING DISTRICTS, TOOELE COUNTY, UTAH

GENERAL OFFICES ROOMS 208 AND 209 BROOKS ARCADE

Oct.26 th,I9II. Ki seal we iT een UTA etaa” tet ewe

A ae be eco fer ped the ANGE eee Y at “ eo o-endvella eet Tene a af e ie gt [vs = {lac oaugths Ceres pee. ped Chee ete Je)

Dear Sir: We intend to extdnaively,develgp one of ou bt smuth Vee: Cold Ch. rob properties during the co @ winter eee eee prop Ve foe ke

erty have opened the vein

o greater depth and we find tnat we have ore

in quantity that can be handled at a good prof even with a fifty mile

wagon haul. We will undoubtedly make some shipment: and will take pleasure in notifying you when we are ores if you will be in the market for bismuth, We

market for &he ores in Salt Lake,but we would pre

<during the winter

tne market with n now find a ready

2y to deal with the

eoneunee for various reasons.It would probably be an advantage to the

consumen also.

Our vein is opened to a depth of about 400 feetand we have a large

quantity of 5% bismuth oreon tae dumps and in sight. A large quantity

of our ore will require concentration to make it a valuable commercial

product,and we intend to put in a mill for that purpose in the spring ,

I9I2. Through the lower grade ores we find considerable IO g and some

as high as 60%. With close sorting we can get a high grade ore that we

can ship very proritably.

The ore makes in a bedded vein of dolomite lime,and twenty acres

of the ore is practa cally on the surface.All that is necessary to re

ach the ore is to drift from the sides of a ravine that marks a slight

fault diagonally across the property as indicated in the accompanying

map.eThe dolomite is exposed over much of the 20 acresand the ore is on

me

ee

“ms,

Pepeerers ae eae ae

|

\ em 4 ;

T.A.E,-2-10/26/I1. the footwall ot the lime.It will probably not be necessary to go to a greater depth than 50 feet to get the ore at any point on this 20 acres.On the west clain,however, the vein goes ouder a heavy caoping of a later formation. We feel very confident we have in this property the greatest body

of bismuth ore to be found in the United States.This we hope to prove

peyond a question of doubt during the next few months.

Yours very truly,

Frank L.Wilson,

Mer.

| |

[ATTACHMENT/ENCLOSURE]

é —_

oe eee, co Pe sg ‘ cv y P % Be PDE pVeINn: ae BEDDE p Vein sl a“ al = x De LOMI Te LIM co LO SM Tre Lime a s

“o sear

uv :

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“Blac Lime” Over

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. 4 ‘y apical Shape | FORM 1467 Westinghouse Electric & Manufacturing Company Works, East Pittsburg. Pa.

BOSTON SAFE DEPOSIT & TRUST CO. BUILDING BOSTON, MASS.

G. M. BATES, DISTRICT MANAGER

IN REPLY PLEASE ADDRESS THE COMPANY

FOR 20 DAYS ONLY AND QUOTATIONS OF $1000.00 OR OVER ARE SUBJECT TO

ALL QUOTATIONS ARE BINOING OUR REGULAR FOAM OF PRINTED CONTRACT.

October 3lst, 1911.

AND REFER TO... MEL essere eg my . LABORATORY OF whee THOMAS A. EDISON, /,

Orenge, New Jersey.

Attention Mr. H. F. Miller, Secy., fe weet 4 Dear Sir: 9 pert

Replying to your valued favor of October 26th,

h ww na writer begs to advise that previous correspondence whic hag Va ee nt” ed

G passed between us has heen with reference to ee Our company, as you know, has a large nunbe g hag”

ALE.

ferent catalogues, price books, etc., which in the course of time have become very bulky and herd to carry. vee seen in the paper from time to time accounts of the nickél paper as invented by Mr. Edison, we thought that perhaps it might pe epplicable to our cetalogue system, and are therefore writing to find out if it would be possible to buy this peper from any manufacturing concern, or if not, could we secure the rights from Ir, Edison to manufacture it for ourselves.

In a previous letter you state that the prper hed only

been made, un to the present time, in small sheets, and we wish

APPARATUS LISTED ON STOCK REPORTS 3S SUBJECT TO PRIOR 5. THE NEGOTIATION NUMBER MUST BE NOTED ON ORDER TO SECURE PRICES QUOTES.

to advise the largest sheet that we would require would be 9" x 6g".

The writer would thank you very much to take the subject up with Mr. Edison and if possible send us a few samples of the nickel paper so that we moy see just what it is. In replying,

kindly address the writer personally.

Very truly yours, WESTINGHOUSE ELEC, & HFG. CO.

a WwW. eat,

[ATTACHMENT/ENCLOSURE]

Westinghouse Incandescent Lamps

Wire-Type Tungsten Metallized Carbon

WESTINGHOUSE ELEC, & MFG, CO,, 201 Devonshire St., Boston, Mass.

Pub. B13kA

She eee: =

AX any ov nee w/ hs oe ee canopies hae mae

eee 32: LZ? . Tue PO es Oe Spee ees

Edison General File Series 4911. Mining - Metals and Other Minerals [not selected] (E-11-61)

This folder contains correspondence, primarily unsolicited, relating to the procurement and testing of minerals. There are numerous items with perfunctory replies, written by Edison in the form of marginalia, remarking upon his purchasing needs and policies or offering referrals to additional sources of supply and information. Some of the documents pertain to Edison's interest in obtaining metals for possible use in his alkaline storage battery. Additional letters concern his widely publicized idea of making books and other printed material from thinly rolled nickel sheets rather than from wood-pulp paper. Among the correspondents for 1911 is E. Schaaf- Regelman, a dealer in ores and rare minerals.

Edison General File Series 1911. Mining - Ore Milling (E-11-62)

This folder contains correspondence and other documents concerning the development of Edison's technologies for ore concentration. Many of the letters relate to experiments undertaken in collaboration with Henry B. Clifford, a mine and mill operator who would apply Edison's ore milling technologies at sites in Colorado. The documents for 1911 reflect Edison's involvement in the technical aspects of Clifford's proposition. Included are letters offering advice on the erection of an experimental mill, along with others regarding tests undertaken at Edison's laboratory in West Orange.

Approximately 40 percent of the documents have been selected. The unselected material consists of additional material pertaining to Clifford, along with letters requesting information about ore milling or soliciting Edison's assistance in developing mine properties.

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PERSONAL CORRESPONDENCE HENRY B. CLIFFORD

Hotel Bellevue~Stratford,

Wh yall in

Suey eae Mr. H. @, Miller, fa be ee a Ns 7 ‘s

Orange, MN. J., Dear Sir:- cee é Present my regards to \ Mics C take plpasure in calling upon him, but, knowing the value of his time, I wifll try and make such explanations as will enable him, as inventor and chem- ist, to, without delay, ask of me those vital questions which I know he will ask in forming his opinion.

Frankly, this problem is worthy of his thought, as it is larbe enough to justify the effort that either he or myself will, make in proving the practibility of the plan. I have been working on it for four years.

The two districts involved are Clear Creek and Gilpin CGountics, Colorado, ‘The mines in these districts have been in opera-

. tion since 1860. Their total product is accredited at over three hundred millions of dollars. Last year, with crude appliances and imperfect treatment methods, the product was two million dollars. Thirty-five years ago the smelting cost was thirty dollars 4 ton.

Consequently, during the earlier operations of these mines, nothing put thes highest grade ore was shipped, Gradually. the smelting rate has been reduced, but it is still 86.00 a ton,- to which is added

freight and sampling .charges.

jer we

SS,

“Re

In the past and at the present, the smelting companies have refused to pay, in any equitable manner, for the capper contained in these ores, Generally, unless the ore contained 2 per cent copper, or 40 pounds to the ton, no accounting was made, and, when accountings

have been made, it has been on the rate of 6 cents a pound for cooper. This is the greatest sulphide zone in the world, The ore bodies continue to great depth, as is proven by numerdus stafts from one thousand to fifteen hundred feet deep, and in the case of the mines whioh I am operating myself, we are working at the depth of twenty-one hundred feet below the wmrface, and this vein larger at that point than any other point above. This same vein has been opened ten thousand feet further away at a depth of two thousand feet, and shows seven feet of these sulphide ores, and the interveining space along the surface proven by shafts, some to the depth of seven hun- dred feet. So, the problem of the continuity of these ores has been solved. In fact, in the properties that I am interested in, we haze an sei gro MP icHRUE of nearly sixty thousand feet. From these mines, past and mesent, we have only been able to ship a grade of ore equaling seven dollars a ton, in gold and | silver, and such ore carried, on an average, 1 1/4 per cent copper. In extracting the ores marketable today, and in the past, immense bodies of the lower grade ore, which constitutes 8/10 of the general ‘gontents, has been left behind as non-commercial. Cur only method : of working today is the same method existing during the last forty years,- that is, stanp mill end concentration. The loss in this

{ Syatem avetages about 20 per cent. Eo At , |

-3- tH) 6/4/11

We, generally, put! four tons of crude ore into one of the concentrates, These concentrates contain 35 per cent sulphur, 32 per cent iron, and an average of from 12 to 15 dollars a ton gold,- five or six ounces of silver, and about 1 1/2 per cent copper. The actual cost of concentrating this ore today is $1.00 a ton. Then, we have to pay $1.00 a ton freight on the concentrates to Denver, where, notwithstanding, the fuel advantages of our concentrates, throuh their sulphur contents, we pay $3.00 a ton smelting charge, and receive nothing for our copper, unless over 2 per cent, except in rare cases of competition::for ore. We receive only $19.00 an ounce for gold, and 95 per cent of the silver value. .

Thus, you can see that we are forced to pay freight on about 60 per cent of the weight represented by sulphur and iron, in addition to 10 per cent of the moisture, and a $3.00 rate for smelting the same parts of. the conenetrates, for whibh we receive nothing.

If the proposition which I an working on, and which I now submit to you, can be made successful, we will be able to treat this ore on the ground and turn the product into mintable bars, at a leeching cost and roasting cost of not to exoced 51 $0 a ton,- that is, provided you can divise some means of getting the precious netals into retortable form, throgh the application of electicity for pre- | cipitation of the metallurgical contents in the resulting liquor, that we will be able to save the cost of freight ani the cost of the fire treatment of the raw material. If this can be done, it will reshlt in seriously affecting the most detrimental industrial incubus that

today effects the mining industry, md, as soon as & practical demons-

pee

-4- 6/4/11

tration is made of thr success of such a leeching system, it will mean the closing of fifty million dollars worth of obsolete smelting plants, that are so constructed as to make it impossible to adapt any other system other than smelting. ,

I, originally, went into this district in 1876, and, on returning to the district four years ago, I found conditions, as far as mill practices are concerned, to be just the same. There is not today an up-to-date mill in the district. Those who com- mand the money power are 01a fossils who have no incentive to im- prove, The great march of mettallurgicel progress has not been followed by them. They. ere still clinging to the old ideas,

After having been abroad through the mining world, md appreciating the great advances that have been made, I realized that the day had come for this marvellously rich countrg to feel the influence of 8 new system, md,since that time, I have been quietly acquiring control of mines, until, in the two counties,

I control 109 mining claims,- many of which have been producers, and are producers today, and some of them self-sustaining through their ability to ship the higher grade ores.

Since I was last in the district great drainage tunnels have been driven to releive the wat er-so gged mines of this gold zone, in fact, there is represented a total, practically, about five million dollars. One of these tunnels is five miles long, and by draining these mines have taken away a pumping cost of,

approximately, $1.00 per ton, We have every local condition nec-

e

jer

~b- 6/4/12

‘essary. The town is only 40 miles from the City of Denver, has

. good railroad conneections, labor is reasogabile, and unobstructed by, labor unions, A powerful mountain stream passes our mills, from which we generate 1000 horse power of electricity from one plant alone,- commonly known as the "Gem Plant" with which I have been associated.

You can inform Nr, tdison that my belief, from the exreri- ence that I have had with this ore, is that we can concentrate this ore, then roast the concenteates, at a cost of 15 cents a ton, they ‘ being self-roasted, and by chloridizing the resulting roasted ash, we can leech out the precious end base metals, there being very little, if any, zine or arsenic. Having an aoundance of water, we can wash this roasted product, and get into fa}colution, the copper, gold and silver. Now, here comes his work, - ‘to fo rmulate some plan that will get the metals out of the leeched water.

If we find that the leeching does not take out sufficient of the gold and silver, then we can cyanide the roasted product, after the copper has been ileeched out.

I am mailing you herewith 2 smal box of our raw concen-

trates, before roasting, and a small box of the c@ncentrates, when

self-roasted. I am also wailing a emoll piece of the raw ore as

it comes from the mines. I might aay that I have in New York suffi- : i cient of these concentrates to send you 100 pounds for experiment, as to roasting or raw cyaniding of the conoentgates.

. 4s to the leeching, I have been investigating for two years

the plan of the Pennsylvania Salt Works, and I am confident that we

<6 6/4/11

can Lleechithis ore at a nominal cost, as th€y are leeching, at prac- tically @8 cost, the Rio Tinto ores, carring 50 cents a ton gold, 25 cents a ton silver, and 2 per cent copper. They tell me that on my ore they can, perhaps, build a furnace that will be one self- roasting process, eliminating the necessity of chloridizing. They are now working on that problem on my ore.

; At this point, I might say that my concentrates carry about 54 per cent iron. “Ye have been told that this iron cannot be made commercial, but the Pennsylvania Salt Company has toasted and leeched the Rio Tinto ores,- th& residue product runs 65 per cent iron, and it is of such admirable character that they sell each ton of ator $8.00 a ton. As every one ton of my yraiugsk concentrates will, Like their ores, produce an iron free of impurities, through the roasting and leeching, there is a future for this iron contents | in our ores.

There are many tiings that Mr. Edison will ask me, and I

am putting you to the lavor of reading this letter, endeavoring to . save his time at our interview. I have gone to great expense in this matter, and I am willing to go eiether expe sse pander Mr. Edison's direction.If be desires, when I call, Iw aL bring 500 stereoptican \ views of this dfstrict, its mills and mines, and carry hin, in reality, . direot into the district,- showing him all of its ramifications and local conditions, ore bodies, etc. I have had these views prepared for emergencies of that cheracter. If be can solve this problem of electrical extraction of these metals, it will make these districts

rise in product from two million dollars to ten million, and enaole

_7- 6/4/12

. the miner to market his vast bodies of $5, 6, 57 ore, which is today comparitively worthless, under existing conditions. I am sending iy, Rdison a copy of the second edition of my _work,- "Rocks in the Road ‘to Fortune’ You can advise me at Wo. 320 Fifth Avenue, New York City, as to the 100 pounds of the concentrates. With best wishes, and hopes that Wir. Edison will not be

wearied by this lengthy communication, I am,

[ATTACHMENT/ENCLOSURE]

. MAIN TRUNK MINE

u ‘ay i 4 x a“. s - i

) w h HH errr mer sete A ec er ee TIT TE Nee SSCS edt ORI AE SY RO LTS porirmmT SX CENTRAL TUNNEL 2009 FaOT LEVEL ON THE. GEM VAIN & NEW HOUSE, TUNNEL 2100 FT’ BELOW SUANACE, * 2000 FRET DSFELAIV SURFACE

Ba D100 FT:

LONGITUDINAL SECTION THRO GREAT GEM! VEIN GEM LEVEL TWO THOUSAND FEET BELOW SURFACE.

; ROB IECTIVE, BOTTOM OF GEM GEM VEIN TO DEPTH OF 2125 FT SHAFT 4000 FT¢DEEP TO SHOWING THE ORE. BODIES ON DRAIN ALL MINES + TO BEUSED THE HANGING AND FOOr WALLS AS COMBINATION SHAFT

Showing the East and West level on the Gem Gold Vein, to open the mines 2,000 feet deep, and connect the Newhouse and Central or Big 5 Tunnels, draining and working one of the richest, gold veins in the world.

weak

Hostel

& “Pontehartrain. |

Oe ee

GEORGE 1 WOOLLEY, ADSOLUTELY FIREPROOF. e | |

as

Mannoene.

“Detroit

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Motel , (Cm oukgygy 4y 5 SNe

t J. QEONGE H. WOOLLEY. : Node

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( PGeecr

Bieatilponit ° Lacks ord Bonds

for United Pigtes Ming 5204, jth oenue van Ineltin New Voy fe June 14, 1911.

| ; Horry fh Giifferd Y Gor ff “pp bf ! LY co

Thomas A. Edison, Esq., . ‘

Orange, N. J. : My dear Mr. Edison:

I have telegraphed to the Gem Mines for fifty pounds of ; the crude Lump sulphide ore, that you may have an idea of the cher~ — acter of the cube. . |

I regret that your experience with a lot of unthinking, impractical men who jump at conclusions rather than demand facts, hes caused you, like other of our ablest men, to feel resentful

f against the mining industry. But I assure you that the practical side of mining is a world in itself, and the problem on which I am

working is one of the most important today before the miners of the |

world. That is, a proper revolutionizing of the system of treating

sulphide ores.

I intend to adopt your system and couple with it thoughts

of my own which are, I believe, valuable, through being the result

of practical experience in mines and mills. Your crusher and blower system is, in my opinion, the beginning of the revolution that will do away with the stamp, the concentrator,and all forms of metallic regrinding machinery, and I accept your kind offer to give me the

exclusive right to the tee of your rolls and blowers in Clear Creek i

and Gilpin County,, upon a royalty of 2¢ a gross ton of ore of |

Pt Sarre SO ME

~ fl

2000 lbs. dry weight, and I will install that plant as quickly as

‘ e

possible, and I am going to rely on your promise to advise with me on all questions that come up that do not take you away from your desk or interfere with your other laudable undertakings.

I cannot use your giant rolls. I cannot use your dryer system, for the following reasons: The ore delivered to our mills comes from miles underground, and it is naturally broken by the ; miners, the largest pieces peing about & foot square. This is necessary to get the ore down the stopes and ore chutes and into small tunnel cars, consequently, I will only need,of the crusher end of your plant,the last or third roll. Before that roll any modern crusher that will handle fifty tons of oa rock an

form o

hour, breaking it down to one inch size, will do me. 3 | |

|

On account of my ore being pyritic and having 4 desire to

!

|

eventually pass the copper pyrites into a magnetic state, I will

have to dry this ore by a cold air blower system, because if I put

it through your present dryer, I am afraid the temperature will

make all parts of my iron and copper sulphides magnetic before the

proper time. Thus, I will have to dry by the blower system, using

cold air as it passes through your small rolls into a crusher that

will commence to size the concentrates.

Our general ores, from which about 350,000,000 have been

extracted to date, carry about an average of 33% pyrites, end these

pyrites when put in the form of concentrates carry about 35% iron

| | | |

bo fe eG reopens USI Riad at ah ele Laiwcaaeeiereeeies TS

and 32 or 33% sulphur. Sp we will have to blow out this sulphide as it passes from roll to roll, and as the power necessary to wise out a large cube of sulphide will carry with it all dust and smaller particles of silica, my plan is to place all of the concentrates so blown out of the dry ore into one bin and allow the sizing of ¢hese concentrates to be made after the total concentration by the blower seebam has put all of the concentrates into one body. After we size these concentrates, then we can adopt the system of the hot air roast at a temperature of 750° and thus make the copper pyrites magnetic. After extracting the copper, the remaining iron pyrites can be self-roasted, the sulphur completely eliminated, and the residue red ash, the result of the roasting, can be chlor- idized and the gold and silver leached out. ,

At this point, I desire to say, that it is my object to save as much of the iyoecoawaes of the pyritic ores as possible. fo that end, I do not want to leach anything but the pure roasted iron sulphide from which practically all of the sulphur will be eliminated. Thus, after the roasting and the leaching, I will have an iron residue in practically a physically perfect condition, which I am able to sell to the furnaces of the State of Colorado, as it will be a red oxide of iron. Further, in the self-roasting of théseiron pyrites, I can make a by-product of sulphuric acid. In fact, I am today selling my midlings, that is, all the finer

tu concentrates, to s Western Ghemical Oompany, who are making sul-

2a Lf?)

CG

phurio acid from my concentrates.

Regarding the crusher, I will need one of these Airst, for the purpose of receiving the residue silica that is plown out during the process of the blower concentration of the sulphide,

for the reason that it is possible thet the quartz so blown out will contain of the higher grade ores about $1.50 to $2.00 a ton gold and silver. All I need to do in this case is to orush by your system down to about the fineness that you are today crushing at New Village end send that product through the cyanide system,

as it will be in physically good condition, a11 of the iron, copper

and acid properties having been eliminated through the concentra-

tion. My plan is to first build a mill of 500 tons capacity,

so constructed that additional units of equal capacity can be

constructed. Just the point where I shall build this mill I have not yet determined, although I have paid $15,000 for one mill site at the mouth of the Newhouse Tunnel, but on account of the by-products of these sulphide ores, it may be cheaper for me to pay 50¢ a ton

for raw material to be hauled to Denver, where a central plant can

be constructed for the purpose of handling all the sulphide ores I

of the State of Colorado, whereas 4f I build at Idaho Springs, will have to confine myself to that locality. I will not trouble you any further on these matters,

unless something serious comes up, but there is one question IT

ere

npn rey et rane onan ER tr ane nee nnn a RE SN tig ee atnest eee pee een

=5e

would like to ask you, as it is important to our attempt to rev- olutionize the milling system, and that is this: After I Sennen. trate and roast and leach the iron sulphide, the product is ina physically fine condition and practically a red oxide containing about 60% iron Sto 20 ton. Will this product then be mag- netic and can I tadse the percentage of iron through magnetic , treatment of this residue leached iron pyrites?

With kind regards, I am, 8s ever,

Yours singerely,

Va

| ile onc iste erate ef a |

: ——Wacenrehs ot ren

[ATTACHMENT/ENCLOSURE]

ee Hy a

bre a _ Coblsetbtehiay 4+ oo oe ; clea yy f- Clee ee eae ld

er ( eave base, Theat guy WO

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paint tah “ ionrieans ta be a Thtets ve nek a

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“ Clfond. A Use Cah AMowlatiow 0: a Ye BU Ilahe Gouge ee Cey Olyferd CO e/ 7 Leandenl™ < Colin wr we” J 9 jc \ he 3D FIFTH AVENUE, \w | New York, ~ of 18, 1911!

My dear Mr. Edison: Thanks for your letter. Will go West and look

over the site question. Regarding the building, I am as cautious as yourself, and will be guided by what you say, but think a 10-ton plant more favorable to. prevent capital stating that a two ton plant

is laboratory test. . ; I am confident we can solve the problem of sulphide treat- , ment, provided your blower system will do its work and eliminate tables. If so all that work you did at Edison will return its re- ward; -- I have control of millions upon millions of $6. sulphide

ore, so it is the question of concentration. After that is done the

balance is up to myself, and I feel the results will be good. Please answer this as to your blower. We jaw crush, then to Cornish rolls; the product from the rolls goes to jigs and 900-

pound stamps, then to tables, and we concentrate the iron_out,

seven little

some of the concentrates are very fine. Am sending yo bottles, which together make up an amount of concentrates sized dowm, and from the whole I get the following.

No-L is caught by 8 Mesh screen.

No.2 is catght by 20 Mesh screen.

No.3 is caught by 40 Mesh screen.

No.4 is caught by 80 Mesh screen-

No.5 is caught by 120 Mesh screen.

YY GACT! . Vube Spring Monry B. Clifford? CG y « ne

“Pauidenl Dy

Mr. Edison. -2- wey., 6/16/1911.

No.6 is caught by 200 Mesh screen, and

No.” passes through a 200 Mesh screen. Do you i

You see that nearly one-half of the whole is very fine. g ‘

think a blower can be so regulated as to make proper divisions. 7

A reply of opinion will help me-

Under the microscope I see that there is very little silica

in Nos.1, 2 and 3; but on the 120 Mesh there is about one-third

silica, and on the 200 Mesh about an equal amount.

that there is absolutely no aust, even the 200 mesh shows clean quartz particles and the iron pyrites are clean and sharp showing

I find also

that they do:not floteRy

| Before: I leave for the West I should like you to tell me about

I think you have the problem of con-

a to the credit. The reason

the Blower possibilities. centration in hand, and should be entitle

no miner has tried your plan is because few men have ore enough to

successfully run your plant. 4 Yours very t

P.S. Who owns the conveyors, crusners

puilt at Edison?

-THE WESTERN UNIO

“This Company TRANSMITS and DE! LIVERS m TA by repeating # mesas!

Form

‘DAY LETTER

INCORPORATED CABLE SERVICE TO. ALL THE WORLD "

Hitting, Sts Mabillty, which have been, aaarntel to by the sender of the following Day F.

25, eee OFFICES IN AMERICA.

against on! need Pat Mr ten (tae the amount Patd for iranemieslon $

can bo

jon oF aie alleee ry ot Unrepea' in tterm, went ATL OO

yA which, Unless other [ng ftaved below. a messagy has icp uerom ag by tho sender thereof, nor inany caso where the cl namiaaic

2 Tete da) ensare 1a Bied with the Com, This is an lorraine raecenre ta Sed with the Coraneny Tor tran raved by request at the sender, under theronaitians named above.

‘Wex New: York. 23 or ae etait :

THEO. N. VAIL, PAESIDENT Pg trot eee tee . BELVIDERE. BROOKS, GENERAL MA Se eee ce rian ne

RECEIVED AT a2 .

23 Mb—___ 44° Blue . My «,

Yhos A Edison es

Your letter recd I will ‘come. over at three oclock

today» Have. come back: from Detroit in compliance with ny tele gram to Mr Mason to inspect Blower system ‘As I Am Anxious

to kmow if it will ee fine. concentrates from hundred mesh geugue.~ - (Es : :

a as B c1iffora_ 11504ll-

2589 B

N. TELEGRAPH COMPANY 4

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cesaires | only on epealions ev baci o Renling station for ‘comparison, ant the Comp will not hold iceate | Hate ¢ orcas ben or ‘iclays in yond tho wun

Ialen 1s not presented tn writing within

NAGER

>

320 Fifth Aveme,

New York City, June 28, 1911.

JUN 429 ot]

By dear Hr. Hason: Returned from Detroit and have had conference with Lr. I hope you

Edison today and he said he would consult you: and myself will work this out together upon his ideas. I have beon working upon the plan of gravity concentration for some time and feol between the three, we can win out. Poo, It isa bigger proposition that it appears at first sight , as miliions can be made “by a cheap systom of concentration and oyaniding- What is booze us is this: We are to take a heavy sulphide ore runing 65% piliea -~ we are to eliminate the silica by

Dlowers, to do avay with sizers and concentrating tebles,; Jigs, - eto. (1) We orush tho lump ore in an ordinary jaw orusher; with

a soreen to sift, out the smi1l stuff. You will, find that, just

as. goon as an impact comes the iron sulphides commence to crun- ble and some of it is 120 mesh at the first break; so to pre- vent regrinding we use a sifter- so" oe

(2) The next stage is a roll peiaied to bring it down to $0 mesh -~ the same. sotion on the sulphides will take piace in

this orusher;that is. some of the pyrites will -be 120 mosh, .S0 “ t

the’ first blower may go under this Ho- 2 roll. _ My idea is to

blow oat different. sizes until the entire. wm have. been

at Pe Met

: eal

separated even to 200 mesh.

The residue gangue or silica, k to your pulverizer and conveyed back

af it containe 72 por ton val-

ue is to be conveyed bac and forth until it goes 250 mesh- oyanide satis ond be quickly treated, for the reason that the

Then the same can go to a

a to 250 mesh-

gold will be more open if crushe coarse and that it is so

Mr. Edison says our gold is very large that if we attempted to oyanide it that it would take

put if we oliminete the coarse gold, while

too long to dissolve; gets in the

plowing out the goncentrates wo will have those nugi

sulphide concentrates - is a perfect

So you can s6e the problem

systom of blower or gravity concentration, leaving us to handle

a system of peparating the gold, silver

the raw concentrates by and copper:

Tt fecl we oan maste as the

y this blower conoontration, This I see from the

sulphides are in cubes even at 250 mesh-

microscope - We may have to blow and blow t

in the end we will, ft think, eliminate all the giliga and that

is what I desire to do- gravity figures.

ne same material over, put

Thig blower system acts as a sizer and as we can concentrate ail forms of ores — Pure sulphides without lead,

Iron sulphides with smol1l lead, Iron sulphides with heavy lead,

Tron sulphides with lead and zinc.

i

And T will bo ablo to save motals for whioh the sreltor today poys nothing wnless upwards of 3% of Leagyand Zino io a drawback when from 2% to 10%; but sing 18 valuable when full : of the quartz, lead snd iron. So I think you will see, it is | gravity concentration thot wo faco, and .the only way to do it do by natural system of air rogulated aeoording to the. specif- io gravity of each mineral: i it can be dono.

Mr. Edison is to-have y map out the plan and I am to pay current expenses, mid aise orect a little testing plent noar him o9 soon as you formato the plons. So romember that I do not at prosent went to go farthor than gravity concontra- tion. I had thought of three blowors discharging, one under

tho other of different revolutions, the oir pressure directed

et an ore channel about two feet long. of course, his ideas are worth a thousand of mine.

I wiula like you to go with me to the dintriot 4£ you oun gspare thn daya- I will pay all your oxpenses- Go say, about duly 8th, 1911.

Yours truly,

0.7 Nw

‘ CS Wier Bins WANG “om — MONTEZUMA 339 \/'\@axe “C6/ / | JAP eae

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WERE EXPERIMENTAL

‘MINING. “MEN AWAKEN’ INTEREST IN: PROJECT.

“3 state capitol, between / men and others who: ar

., the developing of ‘tHe mining Industry. In

s

clently awaken interest’ In‘ the establish: ent of a ‘metallurgical, ;experimental “plant Jn. tha’ state to” insure the. project ; becoming .a,: fact: .: “An: appropriation’ -of

$400,000 Js geslred from the ernment, and this will have to, be

the: work ci

a a mecting which it-ts hoped’ will ‘aut

will be the prineipal speaker of the F

evening, and‘ it 1s planned that’an infor- mal discussion ‘follow his address. The meeting, will begin promptly at 8 o'clock: Because ofthe: great variety of ore to be found in.the'San Juan country, it will be urged that the testing station be set: up In~. that. locality." ‘There.’ may-be other spoakers, besides. Dr..: Holmes. +: this: Nat: “not be-definitely known until the mining men and Commissioner:Thomas R.. Hena-: - hen of the state bureau of mines’ get’ to- wether..in the. iatter’s: office. this ‘after-, Koon, and: talk: the. matter, over. =A: pHecinita programm RU th:

IB. respi for‘ both:the meeting and Dr. “Holme ap

+ pearance at It; :,D ‘olmes ig on:his:way,

. to Alaska, ‘where he: will investigate.

* mining. situation there. and Denver: wil be b i oint in, his: tour.'.EHe.

waa soriginally. but. matters: of im:

‘imost COVERS SI

HOPING To \

Colorado will axsenible Saturday’ evening | °

‘frqm. all parts’of-the. stat

hi ver to“celebrate; the Fourth ‘of, July,

Denver’ boasts :of..“haviny,

mericant flag: in ‘the .country. : Not only:

hat, the flag js the larges! national

: : “in on thom.yesterday : that’ ee a eee :. the< largest | a. square

N=

ayer se0eed CA Se

ay : the: natione came. ao ‘display of F

stia: street plastered.

+. On /the . played'o % ho larg: istence,” ;

School ok Mines

Culorndo

Golien Galo.

VICTOR C. ALDERSON, Pacspenr,

Mr. Thomas A. Edison Orange New Jerger9

Dear Siris

terested in this problem because upon its solution depends the

{ | |

of ore reduction. We in Colorado are pleased that you are in- | | 1

status of mining in this state.

At the Colorado School of Mines we are erecting an ex- perimental plant to do what we can in solving this problem. I enclose a description of our plant and a floor plan.

We shall of course be glad of any suggestions

you may feel inclined to make.

|

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i

Cordially yours, ; . \

wee

wm,

[ATTACHMENT/ENCLOSURE]

rn COLB,

THE OENVER ENGIREERING WORES CO,

EACIREENS OFFICE 08

XxX

ee ee ne et ne

[ATTACHMENT/ENCLOSURE]

The | COLORADO SCHOOL OF MINES MAGAZINE

‘The New Ore Dressing and Metallurgical Experimental

Plant of The Colorado School of Mines.”

BY F. W. TRAPHAGEN,

Professor of Metallurgy, Colorado School of Mines.

The need of working Inboratorics in metallurgy and ore dressing for schools of mines fs generally conceded. As to fust what the scope of such laboratories shalt he, however, the agreement fs not unani- mous,

At some schools it is held that the small laboratory, where the gram, ounce or pound is the unit of weight to be operated upon, Rerves the. entlre purpose of school instruc- tlon, and that principles can be as fully appreciated by well conducted small seale operations as by those conducted upon a working scale:

At other institutions the tendency ts in the extremely opposite direction, and com. mercial scale machines are belleved to be the only ones that will serve the purpose,

It may, perhaps, be well to add here that location has much to do with these views, the former opinions generally belng held where the Inboratory is distant from’ the ore supply, while the latter is held by the instructors who are able ensily to obtain desirable ore in carlond lots.

At one well known school the scale for working operntions is 2 matter of depart. mental opinion only; one department oper- ating on a small laboratory seale, while the other operates on oa much larger scale, using many commercial) size machines, and adopting that size even though remote from a source of ore supply.

In general, it may be said that ore dress- ing operations are far more flexible than metallurgical, and make possible a commer-

cial seale treatment under conditions ap. .

proachable in mining schools, This is

‘largely because of the fact that In ore dress-

Ing It is possible to work on short shifts because the vartots machines soon reach conditions of normal running and quickly

*From the Western Chemist and Metal- lurgist, October, 1909, with alterations in the plans since that time.

respond to variations of adjustment, and further, the material‘ undergoing concentra- tion does not lose its identity, and, except for reduction in size, may be restored to its inftin) condition by careful mixing, when it Is ready for another eyele,

On the other hand, the commercial unit of most metallurgical devices is so’ Inrge, their capacity so great, and the time re- aured to reach a normal condition of opera- tion 82 long, that aside from other objec: tlons, a commercial size machine [s almost prohibited. These objections apply espe. cially to furnace operations, but in many other metallurgical operations they are im- portant factors, At the sume time, as shown by successful operation In several schools, much valuable. experlence can .be gained by the running of relatively small furnace units. At the Colorado School of Mines, a few years ago, in connection with thetr thesis work, a small group of senlors made a number of successful matte runs in an eight-inch blast furnace, galning expe- rience and confidence of great value to them, P

Small scale laboratory operations are in- valuable and cannot be dispensed with, but wherever pogstble it seems highly desir. able, also to operate on the larger scale.

When the present administration of the Colorado School of Mines took hold of af- fairs seven years ago the equipment for ore dressing and metallurgical work was extremely meagre, and it became necessary to take steps~to Improve this condition. Carefully organized inspection trips were instituted, and the especially favorable loca- tion of the school with reference to success- ful operating plants, was made use of to the fullest extent possible. The small scale apparatus was added to, and a course of ore. dressing and metallurgical experlmen- tation mapped out,

This was good as far as It went, but stll! there was something lacking. This want

|

fission prea

[ATTACHMENT/ENCLOSURE]

2 THE COLORADG SCHOOL

was partlally supplied by the use of a com mercial ore-testing plant which was leased for n certain perlod during the spring of two different years, Ore was treated in carload lots, with the Sentor class in charge of the plant, In Inter years, mills and mines {n mining sections were leased, and all operations called for, including repairs, were conducted by the students.

These éxperlences served to impress us with the absolute necessity of a plant of our own, for no commercial plant can fully meet the needs of a class of students.

In designing our school plant we had several purposes in mind which it must serve, It was to permit:

1. A study of tho principles on which ore dressing and metallurgical operations are based. This will be accomplished mainly by small scale apparatus.

2, <A study of machines; the construc- tion of machines of various types, with tho important parts, and methods of adjust- ment, .

3. A study of the operation of individual machines; the conditions of proper feed, water ratio, capacity, effects of adjustment, and horse power required,

4, A study of operations; especially with reference to variatien of conditions and ar- rangement. This Involves preliminary test- ing with smal! scale apparatus.

5. For a study of the problems Involved in the various theses required of Senior stu- dents before graduation, and to afford a means for the study of proposed lines of ore treatment cn both small and large senles,

6. A thorough Investigation of methods for the treatment of ores by skilled engl- neers, who are to he allowed the use of the plant under conditions to be determined later, and who would thus have provided them the very best equipment available, and at the same time be able to carry out their own {ideas in experimentation with- out interferences of any sort. It is ex- pected that our students will profit by ob- servation of the methods employed by these men,

3. Finally, and most important of all, is the opportunity for research work that will be possible with an equipment as complete as that here provided.

As earlier stated, the necessity for a suitable plant was recognized long ago, and during a considerable period the various essentials which such a plant should pos- sess had been receiving careful attention. When it was decided to ask the Colorado legislature for an appropriation to build and equip our plant, it was thought best to out- line in a few words the scope of work re- quired and the general plan of operation. After the appropriation had been made, the metallurgical department, embracing the subjects of assaying, ore dressing, and met- allurgy, got out'a series of what might be called “general specifications,” in which the

OF MINES MAGAZINE,

particular points necessary in such a plant were mentioned, and most of the more Im- portant operations and machines were spec- {fled. These specifications were generally distributed with requests for suggestions, and several very important ideas were gicaned as a result.

Matters were then in excellent shape ta begin actual planning, and the Board of Trustees appointed Frank E, Shepard of the Denver Engineering Works Company as consulting engineer, The preliminary plans were the result of the work of Mr. Shepard, assisted by P. D. Grommon of the class of 1907 of the Colorado School of Mines, together with frequent confer- ences with the metallurgical department of the school, These plans are not final, for hefore the equipment is placed it is ex- pected that criticisms called for in the gen- eral distribution of the reduced. plans will cause alterations in many particulars. What we want is a building and equipment that will, as completely as possible, meet the needs of a school sttch as ours, and also permit investigations that shall be of the greatest value to our commonweajth and to the mining fraternity at large.

Detailed Description of Plant.*

Reference to the floor plan will show that the mill is composed of several sections or units, each completely equipped for Its own type of work, and all housed in one com- mon building where any unit can readily be reached from any other unit.. With the ex- ception of the dry concentrating, amelting

* and cyanide units, the mill is designed to

have an approximate capacity of 60 tons per 24-hour day. The three units mentioned are of such a nature that small lots, say 6 tons maximum, are as large as it will be destr- able to run in them.

The ore will be brought to the mili, either over a spur to be run from the rallroad tracks, as Indicated In the plans, or by an nerial tramway from an unloading station on the main line of the Colorado & South- ern Railway. In elther ease It will be han- dled so that it can be dumped into any one of the 12 storage bins. These bins are of steel, 25 tons capacity, with hopper bottoms and swinging draw-off gates. They will be used variously for recelving ore, storage of lots after preliminary crushing and sam- pling, and for the storage of lime and fuel for the smelting unit. :

Crushing Unit.

The ore is drawn from the bin into a 16 or 20 cubic foot ore car, trammed over the scales, where it can be weighed if desired, to the platform elevator, -elevated and

crusher below, The undersize from the

*Descriptive part by Mr. P. D. Grommon, Colorado School of Mines, 1907.

~ dumped over either the grizzlies into the |

oF

[ATTACHMENT/ENCLOSURE]

THE COLORADO SCHOOL OF MINES MAGAZINE. 3

grizzly and the crushed product ean be de- livered into separate cars in order to de- termine the percentage of raw or run-of- mine ore that needs no crushing. There 1s room at this point for four cars, so that if both crushers are running all products can be kept separate; or, if destred, all can be laundered to one or two cars, The crushed ore is trammed out, weighed as above indi- eated, and clevated either back to another bin, or farther up Into the traveling bin of the sampling unit.

The machines of this unit are two 3’ by 8’ taper bar grizzlies, one standard 7” by 10” Blake crusher and a No. 2 Gates gyratory crusher or its equivalent. Space has been left for the addition of a third grizzly and crusher, as well as ample floor space for working and making adjustments.

Sampling Unit.

In this unit there Is a wide range of pos- sibilities as to flow of are, so that each ma- chine enn be tried out against the others under identical conditions, The ore is re- ceived in a hopner-bottom traveling stecl hin of 5 tons capacity, moved by a motor, so that It may be discharged by a plunger feeder into any one of the three sampling machines, viz. a Vezin, Brunton or Snyder.

The reject from the samplers passes to an ore car and the sample is ground in a set of 12” by 20” rigid rolls with feeder at- tached, If this sample is small enough, the subsequent cutting down and grinding can then be done by hand; but if too large, the sample can be elevated In a 6” by 4” belt and bucket elevator directly into the hopper of one of the other samplers, and the sample there obtained further reground In a_Samp- son crusher, laboratory crusher or sampler grinder, and finally cut down by Jones rif- fles or similar devices, In this way a sam- ple of any desired size can be obtained, regardless of whether the Jot be so large as to require two or more cuttings, or 50 small that one cutting will suffice, The traveling bin can deliver to any sampler; any sampler to the rolls; the rolls to the elevator, and the elevator to any sampler again, so that with the exception of the final splitting and grinding of the sample, the entire operation may he made auto- matic. When the sample is small and it is desirable to omit the use of the belt and bucket elevator, the rolls are high enough to discharge Into an ore car which can then be elevated and dumped into the hopper of a sampler. The total reject, or the entire lot minus the sample, can now be returned to the original bin, thence to be drawn off as desired, or it can bo sent direct to one of the four bins below.

Stamp Mill Unit, This unit contains a- standard 850-pound

j-stamp battery, and a battery of two Nis- sen single stamps. Each battery has its

own steel bin and feeder, and jn front of both runs a track on which the plates are mounted so that they may be used inter- changeably with either battery. A Plerce amalgamator and a mercury or amalgam trap. form the rest of the equipment of this unit,

It is intended to have the two Nissen stamps of widely dlfferent types, and to have the 6-stamp battery of modern con- struction, and so built that various condi- tlons can be tried, such as height of drop, discharge, etc.

The tailings from the plates or amalga- mator will be Jaundered to a small sump In the floor which feeds a centrifugal pump delivering to the classifier system. The Intter will be described under the concen- trating unit. :

Roll Crushing Unit.

There are so many possibilities for changing the flow of ore through this unit that only a description of the general seheme and a few possible arrangements will be deserlbed. The previously crushed and sampled ore Is delivered into the 15-ton ore bin, whence it is fed automatically by a plunger feeder to a 10” belt and bucket elevator and delivered to the first of a train of three 36” by 6’ revolving screens. Over- size from No. 1 screen or trommel is sent back to a set of 14” by 27” spring rolls which discharge into the same elevator, Under- size goes to No. 2 trommel and its under size to No. 3 trommel. Oversize from No. 2 trommel can be sent to either a 3” 6-com- partment Richards pulsator jig, or a single 4-compartment all-fron Harz jig; or it may be reground {n any one of the various re- grinding devices to be mentioned later. Oversize from No. 3 trommel will go to the jlg not fed by No. 2, while the undersize from No, 3 will go to the classifier system.

Two Impact screens in tandem will be installed as shown, and used jnterchange- ably, or in parallel with No. 2 and No, 3 trommels. The former will be equipped for elther wet or dry work, and both they and the three trommels will be provided with extra screens on frames, so that the mesh of any, screen can be ‘changed with very little trouble.

Jig middlings or tallings, or both, from either or both jigs can be reground in any one of the following devices:

1. A set of 14” by 27” rigid rolls so located

as to discharge. into either the 10” elevator ‘

or the centrifugal pump sump.

2, A 3%4’ Huntington mill discharging as above,

3. A 3%’ Chillan mill discharging as above,

4. A set of 5%x8" Triplex rolls.

5. A small ball mill. :

From the general arrangement of this unit It will be seen that:

[ !

[ATTACHMENT/ENCLOSURE]

4 THE COLORADO SCHOOL OF MINES MAGAZINE.

1. Trommels and Impact sereens can be used interchangeably.

®, Either jlg may he used as the fine. and the other as the coarse jig.

3. Coarse jig middings oy tailings, or both, can be reground In any one of three machines, and sent back through the screen system to be caught on the fine jig.

4. Fine jig products to be retreated can he reground in any one of five machines, and the product pumped divectly to the classifier system,

In short, any two machines of similar character can be used in parallel under ex- actly the same conditions, or in series, thus giving ample opportunity to compare the advantages of the varlous machines on lite ferent clagses of work.

Classifier System and Concentrating Unit.

At the hend of the classifier system {s a cone thickening tavk, 48” In diameter, of the bottom-draw-off, rim-overflow type. As stated before, this tank Is fed cither di- rectly with the undersize from the Inst sereen, or by a centrifugal pump from the small sump. An exception to thls proced- ure may be made by omitting the thicken- ing, and sending tho feed from the sereen to a compartment spitzkasten whose prod- ucts go directly to the tables. When the thickening tani is used, the thickened palp is fed to a 3” Gcompartment Richards pul- sator classifier, a train of two Callow trav: cling belt screens or two King revolving screens. In any case either of the products can be Inundered to any table desired. The overflow from the thickening tank will go to an 8’ tank, the overflow from which will probably be clear enough to discard, and the thickened pulp can bo sent to the slime tables.

Nine concentrating tables and slimers are shown in the plan, with room provided for several others. The proposed equipment consists of two Wilfley tables, two Card tables, one each of the Overstrom, Deister No. 2, and Deister No, 3 tables, a Johnston or Frue vanner, and an Akins & Evans sllmer or some other canvas table.*

A 10” by 54” Frenier splral sand pump will handle any table product for regrinding, pumping it back to any one of the regrind- ing devices mentioned before, 80 that it may be prepared for treatment on the slime tables. The table tallings may be sent either to the dump or to the cyanide unlt for further treatment. The table concen- trates are shoveled from the boxes directly into cars and trammed-to a steam drying plate from which they can be transferred to another car and taken to any point de- sired,

Dry Concentration Unit.

In this unit will be installed various ma- chines for dry concentration. It is ar- ranged so that the bin can discharge di- rectly into the feed hopper of a cylinder which can be used either for drying or for

giving a magnetizing roast. This is fol- lowed by a cooling cylinder. A fine grind- Ing device of some sort wlll be installed here, as well as a set of Columbian vibrat- ing sereens for dry work, ‘The sereened products can then he treated In any one of the machines, belng fed by hand If the lot Is small, or handled by the overhend track, If large.

The equipment as shown in the plan {- cludes magnetle separators of the Wether- {ll and Dings type, a Blake-Morscher elec. trostatie separator, a Sutton, Steele & Steele dry concentrator and a Behrend dry concentrator, All of these machines are of the small, or laboratory size,

The room’ containing the dry concentra- tlon unit probably will be separated from the rest of the mill by a partition con- structed for the most part of glass.

Cyanide Unit.

Since commercial cyanide tests can be made satisfactorily an a scale smaller than would be suitable for other tests, the equip- ment of this unit is designed to handle a charge of about § tons, It will be apparent that 2 50-ton capacity cyanide unit would occupy needless space.

The grinding equipment of this unit will be a 4’ Hardinge conical tube mill, and a 4? by 10° cylindrical, belt-driven the mill, hoth for grinding the sara to slime if such treatment is desired, A centrifugal pump is provided to take the original feed or the tube mill discharge, according to the plan of treatment, delivering the same to either a‘Dorr classifier or a Richards sand-sline classifier. Both of the Jatter machines are of laboratory size.

Slime may be treated in a 6’ by 5’ conlcal- bottom agitating and thickening tank with a rim overflow, or In a 3%! by 10’ Pachnea tank. The thickened product can then be treated in elther a‘ Moore or Butters vac- uum filter, or in a Burt pressure filter, The three latter machines are small sizes.

The sand may be returned to one of the tube mills if a straight slime treatment fs desired, or may be treated In a fiiter-hot- tom, sand-leaching tank.

Two solution tanks, 6’ by 6’, one for barren or dilute solution and the other for gold solution, are set at such a height as to dis- charge by gravity.

For precipltation of the gold from preg: nant solution, zinc shavings may be used in a G-compartment zinc box mounted al- rectly over the sump tank, or ailne dust precipitation may be used followed by filter pressing. It Is further planned to provide means for electrolytic preeipitation.

All tailings from this unit will be sluiced out through a large cement-lined launder to be located under the floor. :

‘A small barrel for chlorination work also will be installed In this unit, and space has been provided for additional leaching de-

- vices,

| ! | |

[ATTACHMENT/ENCLOSURE]

TUR COLORADO SCHOOL OF MINES MAGAZINE. ; 5

Smelting Unit.

As previously stated, a number of bins at the head of the mill will be reserved for the storage of fuel and fluxes, The unit is divided Into two sub-units or sections, viz,, the roasting section and the smelting section proper.

In the roasting sectlon are a hand rever- beratory furnace and an English cupellation furnace. The hand reverberatory will have a hearth area of about 4’ by 9 with rabhling

doors at ench side, The cupellation fur-

nace will be of the type used In the Massa- chusetts Instltute of Technology. It can be adapted to many uses by changing the nature of the hearth, and will be used for high roasts, cupelling, and making blister eopper. Both of these furnaces can be charged from cars on an upper level and discharged into others on the ground floor.

The equipment of the smelting section proper has not been decided upon definitely, but [t will consist of small furnaces and ronasters of varlous types. The blast fur- nace will be rectangular, of 18” by 36” cross- section, and water-jacketed In sectlons to permit of casy dismantling. A track will he placed wniderneath the furnace, and it will be so arranged that the crucible used in lead smelting can be changed for the hearth used in copper smelting by running the one ont and the other Into place. This idea will be carried out as far as possible, with a view to making the one furnace serve for cither lead or copper work.

A blower for compressed air, and the necessary forehearth, matte and slag pots, and other accessories will be ineluded in the equipment of this unit.

Laboratory Unit.

This.unit, located in the corner of the building nearest the present school build- ings, and adjoining the sampling unit, will be equipped with desks for chemical work, assay furnaces, balances, etc. The clean-up room for the batteries and cyanide unit also will be in this section, and will include amalgamating pay, clean-up pan and a re tort and bulllon melting furnace.

The room marked Reve Metals Labora- tory in the floor plans will be used, as im- plled by its name, for experimental work on miscellaneous and rare metals.

Experimental Machines,

The small sized, or experimental ma- chines will be located in elther the present ore«lressing laboratories in Stratton Hall of Metallurgy, or moved into the room ad-

joining the cyanide unit, marked in the plan “Experlmental Machines." These machines may be used for preliminary tests prior to the regular mill tests,

General Considerations,

Ample space has heen provided in the!

mill to include newly Installed machines In any flow-sheet, Besides the water piping necessary for the operation of individual machines, valves and nipples will be pro- vided at conventent places for flushing and

- cleaning, and all floors are designed with

drains and sufilcient slope to take care of the water, Air will be on tap for cleaning up machines operating on dry ore. A heat- ing plant of ample size will be installed as shown In the plan. The mill will have ample natural Hight and ventilation, but electric Hghts will be distributed at con- venient places so that there will be perfect ight at all times, Inasmuch as in a mill of this kind a considerable portion of the plan will be idle at various times, all laun- ders, tanks and frames supporting machin- ery doing wet work will be constructed of steel, as wood would either rot or warp badly. The water supply will he from wells sunk near the bed of Clear Creek, whence it can be elevated to tanks commanding the entire plant. Settling ponds and sump tanks can be provided below the mill, for the set- tling of tailings and recovery of water.

Electrical power {is supplied from the cen- tral power plant of the school. Special care has been exercised to make sampling ac- curate and absolutely free from the possi- billty of self-salting. Independent motors wHI be used freely and welghing and meas- uring apparatus provided generously tn or- der to determine power and water consump- tion and actual capacities of the various machines in use. Comparison of machines will be possible under ‘identical conditions, and all possible vartations of practice, logi- eal and illogical, will be made possible by the scheme of installatlon, the keynote of which is “flexibility.”

When we finally have adopted our plans, and have erected and equipped our build- ings, we feel that the Colorade School of Mines will be In a position to render to the mining industry such services as shall place her name high on the roll of honor,

After considerable delay machinery and structural steel are rapldly belng delivered at the site, where foundations and sumps are already completed, but without doubt the building will be enclosed and under roof before winter and much of the installation will be in place by early spring,

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