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Management _



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PART IT (1879-1886) Thomas E. Jeffrey Microfilm Editor and Associate Director Paul B. Israel Assistant Editor Mary Ann Hellrigel Douglas G. Tarr David W. Hutchings Robert A. Rosenberg Editorial Associates Leonard DeGraaf John Deasey Joseph P. Sullivan Barbara B. Tomblin Alan Stein Jacquelyn Miller Karen Kozak Maria Antonakakis

Student Assistants

Keith A. Nier Assistant Editor

Reese V. Jenkins Director and Editor

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

University Publications of America Frederick, Maryland 1987

Edison signature used with permission of McGraw-Edison Company.

Thomas A. Edison Papers at Rutgers, The State University endorsed by

National Historical Publications and Records Commission 18 June 1981

Copyright © 1987 by Rutgers, The State University

All rights reserved. No part of this publication including any portion ofthe guide and index or of the microfilm may be reproduced, stored in a retrieval system, or transmitted in any form by any means—graphic, electronic, mechanical, or chemical, including photocopying, recording or taping, or information storage and retrieval systems—without written permission of Rutgers, The State University, New Brunswick, New Jersey.

The original documents in this edition are from the archive at the Edison National Historic Site at West Orange,

New Jersey.


Reese V. Jenkins Director and Editor

Thomas E. Jeffrey Associate Director and Microfilm Editor

- Assistant Editors Research Associates Paul B. Israel Douglas G. Tarr Robert A. Rosenberg Mary Ann Hellrigel Keith A. Nier David W. Hutchings Andrew Butrica Assistant to the Director Secretary Helen Endick Grace Kurkowski Student Assistants Leonard DeGraaf Joseph P. Sullivan Alan Stein Karen Kozak

Jacquelyn Miller Granville Miller


Rutgers, The State University of National Park Service, Edison New Jersey National Historic Site Edward J. Bloustein Roy W. Weaver T. Alexander Pond Edward J. Pershey Tilden G. Edelstein Smithsonian Institution John Gillis Bernard Finn New Jersey Historical Commission Arthur P. Molella

Bernard Bush Howard L. Green


James Brittain, Georgia Institute of Technology Alfred D. Chandler, Jr., Harvard University Neil Harris, University of Chicago Thomas Parke Hughes, University of Pennsylvania Arthur Link, Princeton University Nathan Reingold, Smithsonian Institution Robert E. Schofield, lowa State University


William C. Hittinger (chairman), RCA Corporation Edward J. Bloustein, Rutgers, The State University of NJ. Cees Bruynes, North American Philips Corporation Paul J. Christiansen, Charles Edison Fund Philip F. Dietz, Westinghouse Electric Corporation Roland W. Schmitt, General Electric Corporation Harold W. Sonn, Public Service Electric and Gas Company Morris Tanenbaum, AT&T


PRIVATE FOUNDATIONS Alfred P. Sloan Foundation Charles Edison Fund

The Hyde and Watson Foundation Geraldine R. Dodge Foundation

PUBLIC FOUNDATIONS National Science Foundation National Endowment for the Humanities


Alabama Power Company

Amerada Hess Corporation


Atlantic Electric

Association of Edison Hluminating Companies

Battelle Memorial Institute Foundation -

The Boston Edison Foundation

Cabot Corporation Foundation

Carolina Power and Light Company

Consolidated Edison Company of New York, Inc.

Consumers Power Company

Corning Glass Works Foundation

Duke Power Company

Exxon Corporation

Florida Power & Light Company

General Electric Foundation

Gould Inc, Foundation

Gulf States Utilities Company

Idaho Power Company

International Brotherhood of Electrical Workers

Iowa Power and Light Company

Mr. and Mrs. Stanley H. Katz

Matsushita Electric Industrial Co., Ltd,

McGraw-Edison Company

Middle South Services, Inc.

Minnesota Power

New Jersey Bell Telephone Company

New York State Electric & Gas Corporation

North American Philips Corporation

Philadelphia Electric Company

Philips International B.V.

Public Service Electric and Gas Company

RCA Corporation

Robert Bosch GmbH

San Diego Gas & Electric

Savannah Electric and Power Company

Schering Plough Foundation

Texas Utilities Company


Transamerica Delaval Inc.

Westinghouse Educational Foundation

Wisconsin Public Service Corporation

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.


Reel duplication of the whole or of any part of this film is prohibited. in fieu of transcripts, however, enlarged photocopies of selected items contained on these reels may be made in order to facilitate research.





D-79-028 [continued] through D-79-036 ("Mining - Platinum Search" through "Telegraph")

D-79-028 Mining - Platinum Search


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"Saturday: afternoon, two! mon ‘Avho had fourteen \years mf OEP

Aigging « woll upon Mr. Browning’s farm, some-miles west of, Contropolie, and ‘iiithe {| Ditunock neighbor , coma into te atty

expertence injitaksas, { am prepare Ps wee lo lvelthe fur Heat tie -

Hb ‘de , P ~ ‘| wittita lot-of peowtar.minorst-“spectinons, tng Tana tn th patate, fake G. s IB. A A IE WN WN pi § Ss 9 = }| These specimens were submitted to-many]

Norgsong, nearly -all: offwhoms pronounced Wipecedary ; {them sliver oro, {Mnally, Mr. Clarke, of tho Clty ‘Poadary;\and Dr. Goo. Brown, deug- 1879, gist, submitted a portion of the ore to ohém- ical testa, aud both unrororvedly pronounced ‘tho game ‘almost ‘purc*platinun. ‘This‘an- jNouncenent has created quite ax excitomont; ‘}4n' our city, as this’ mital Is worth morg per: ounce: than: golds It ts largely used in. alll: eloctri¢~inatruments, and+-fs-am- essentias|- clement to the, suocess of Prof. Edison’s famous clectrii light. In tnet,’ Mr. Cdlionys ag offered $25,000 roward-for.the diavovery{t of ‘this metal in‘anything dike largetpranth|: ties, + efits a ge esa td | For 'the hirformation of-“our renders wt) [Biv 6 adpbeaogs tdi Ohanbory’Knoyolopredis|i F, 7 Lhog shud othor svorks, ‘upen the qublity, dogeripel)


ton and péouHarlttes of thls metat:. ‘|. Wobstorisives tofollowing descriptions

‘| @Poat-t-NOUM, or POATENUA. A mothl} -Jof the voor Of-ailvers but legs bright. Tey]: ipapediii¢ -gravityds 20, and insy be-ancrtaged ‘Thy heat nnd pressure to 21,5.° [tie nurder ‘{tiaw-iron; undergoca'no alterattor: in'nt, ‘|reststs the actton of acids, f4 very auctilo, and‘tapablo | oft belug rolled into. very: thin : Plates. It is the-beavicst und least expansl- te of the motata? ; ‘}) Fn Clave, nceyclopedhviws tttd: the followings: 0 \ oe a He ‘} DLAFINUA-s one of thenoblo metals, iJ which -Inay Lo obtalnedtn mord forme than jJoue, It 1s only found in the native state, {usually-oceurring {0 small -glistoning gran- re ‘jttos of a atcel-gray colory which always con- ‘{taing an admixture, in-virying proporttons; of sevérak otliér’ niétaly; most ‘ofowhich ara rarely found except tn assoclution with pla- dinum, Sometimes, howatan, it oevuys 1 Ingres -of the size of a pigcon’s egg, und y pidocs wetgliug ten, ot eyen twonty pounds, ave ocenblonally been found. Ithas so far only been tound: in payingt qyareities tir Columbuy, California, Oregon, Spain;! Aus. trallvand Russia, here are Lut two meth. :/ods of obtaining platinum fu tho torm of Boe Cel iJingots froin tlio ore, 1. o:, After tho-removal . jot tho metala assoviated \ritli-the platinum, : by Ue successive actidn of nitric-and hydro. chloric’ acids, Tho platinuin itself.ia dia- ‘Jeolved {a ‘aqua regio, from’ whioh ‘itis pre- cipitated« by-a solution’ of sal ammonia, in tho form dof t sparingly solublo-double sult {a'his salt is washed aud heated to.redness, and the ‘chlorine and ummonia. expelled; leaving the metal in the form of. gray; spongy soft muss, known. na spongy vlati- num. (tis thon iitely powdered;.and:slinped by intonso-pressure into a- waas, then OX posed to' Intenso heat in w wind furnace, and formed into ingots by hammering upon its two onds, * * * [Tho othor.method fy too Jorg for nublitation:{n? te! Nunva:] ‘| Platinum’ exhibits a blulsh-whi.e metalic lustre; {tis excoedingly malleable and duos tile; und ‘is vory infusible, melting-only bo- fore tho oxylydvogen blow-plpe, or in u vary,

used for vents for the Wi late years.” es }

tn Attileld’s Chemistry we tind’ the follow- ing: : Plt Pa Tae aed ' “Platinum, like: gold, usually. ocouresto uaturo in tho fraa: atateythe chiet source’ of supply boing Mexico, Brazil,aud Siberiac It is separated «from! alluvial soil by washing, ‘The chiet use of platinumis in the construc. tion of foil, wire,’ crucibles, spatulaa, cap- Stiles, ovaporating.dishoa,. and. stills ‘for. chomlcal: manufietwro; “The-chamical paal- tlon'of'platinum {s cloae to that of igolds-1t {s\hard, ‘fusible withiigroat diflou ty;-not™ dissolved by hydrochloric, nitric’ or'stiphu- ric noida: and on tly affeoted ‘by alka:

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