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Author : Walter Lee Brown
Publisher : Unknown
Page : 1144 pages
File Size : 50,7 Mb
Release : 1889
Category : Assaying
ISBN : NYPL:33433066376173
Author : Walter Lee Brown
Publisher : BoD – Books on Demand
Page : 326 pages
File Size : 51,6 Mb
Release : 2024-02-09
Category : Fiction
ISBN : 9783385334861
Reprint of the original, first published in 1883.
Author : Walter Lee Brown
Publisher : Unknown
Page : 576 pages
File Size : 46,5 Mb
Release : 1897
Category : Assaying
ISBN : UIUC:30112088851214
Author : Walter Lee Brown,A. B. Griffiths
Publisher : Unknown
Page : 128 pages
File Size : 46,5 Mb
Release : 1900
Category : Electronic
ISBN : OCLC:315338319
Author : Walter Lee Brown
Publisher : Unknown
Page : 610 pages
File Size : 44,5 Mb
Release : 1902
Category : Assaying
ISBN : UCAL:$B316712
Author : Walter Lee Brown,Arthur Bower Griffiths
Publisher : Unknown
Page : 333 pages
File Size : 51,7 Mb
Release : 1890
Category : Assaying
ISBN : OCLC:155982433
Author : Walter Lee Brown
Publisher : Palala Press
Page : 324 pages
File Size : 42,9 Mb
Release : 2015-09-01
Category : Electronic
ISBN : 1340899493
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author : Walter Lee Brown
Publisher : Createspace Independent Publishing Platform
Page : 318 pages
File Size : 52,8 Mb
Release : 2017-11-13
Category : Electronic
ISBN : 1979723281
"The processes of assaying are detailed with great clearness." --Popular Science Monthly, July, 1883. "It is just such a book as is needed to assist those who are, by actual work, developing the gold and silver mines of the country." --Chicago Tribune, March 31, 1883. "The author has faithfully endeavored to carry out his idea of a plain, practical work. No one will be a loser who possesses ...." --Mining and Scientific Press\ San Francisco, Aug. 18, 1883. "Has endeavored, we may add, with marked success, to prepare a work on assaying " --Engineering and Mining Journal, April 28, 1883. "The book will form an excellent elementary guide to the important art of assaying." --Chemical News, London, June 8, 1883. "Mr. Brown has succeeded in providing a valuable assistant for the student, the miner, and the assayer." --Mining Review, March 29, 1883. "This handy volume appears to contain sufficient information in the art of assaying to entitle it to the claim of being a manual of instruction to beginners.' --Scientific American, July 14, 1883. "There is probably no other book in the English language that so fully meets the wants of those for whom it was made as this manual." --Journal of Education, Boston, Sept. 25, 1884. "It is a complete compendium of everything pertaining to the assaying of the above-mentioned ores." --Mining Record, April 7, 1883. "Allow me, as a miner, to thank you for your manual. It is written in English, and for us, and not for Freiberg men." --EUGENE SMITH. "My opinion is, that for clearness, accuracy, and adaptation to the uses of an American assayer, it is worth all the other assay books that I am acquainted with." --H. O. LANG. "Your book is plain and to and just the thing for beginners." --E. W. WALTER. "I congratulate you upon this little book I wish other writers on metallurgical subjects would write in as plain English." --Louis JANIN, Mining Engineer.
Author : Walter Lee 1853-1904 Brown
Publisher : Wentworth Press
Page : 502 pages
File Size : 53,8 Mb
Release : 2016-08-29
Category : History
ISBN : 1374197416
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author : Walter Lee Brown
Publisher : Forgotten Books
Page : 612 pages
File Size : 49,9 Mb
Release : 2017-11-23
Category : Science
ISBN : 0331754304
Excerpt from Manual of Assaying: Gold, Silver, Lead, Copper It is my sincere belief that there is no book in the English language on the subject of assaying which occupies the space that this little manual tries to fill. A number of such publications fail to meet the want, on account of their antiquity, they having been written some thirty years ago; hence their methods. Apparatus, etc., are not suited to the assayers of to-day. Others are either more suit able as books of reference, or do not give sufficient detail for the inexperienced. It is this latter fault I have carefully endeavored to avoid, and perhaps have gone to the other extreme. At all events, I have tried to give here in print the precise instruction which I have previously imparted orally to my students. Those who may choose to criticise, will remember for whom this hand book it} written. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author : Alfred Stanley Miller
Publisher : Unknown
Page : 194 pages
File Size : 55,8 Mb
Release : 1905
Category : Assaying
ISBN : WISC:89083896209
Author : Walter Lee 1853-1904 Brown
Publisher : Wentworth Press
Page : 600 pages
File Size : 42,9 Mb
Release : 2016-08-24
Category : History
ISBN : 136043982X
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author : Alfred Stanley Miller
Publisher : Theclassics.Us
Page : 32 pages
File Size : 46,8 Mb
Release : 2013-09
Category : Electronic
ISBN : 1230353704
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1905 edition. Excerpt: ...height about 4.5 cen Transactions of the American Institute of Mining Engineers, October, 1898. Mr. Chism claims as original the use of silver for receiving mercury (though this was suggested before), and the use of a separate vessel to cool the receiving surface by contact. t See Fig. 39. A, base of retort-stand. B, spirit-lamp. G, retort or annealing-cup. D D, retort stand ring, which serves as support to the apparatus. E E, tin shields. F F, silver-foil for receiving the mercury. O, cooling-cup. tinieters. The mouth of the crucible should have an even surface. Shield.--To prevent the direct heating of the upper part of the crucible and silver-foil, use a circular tin shield about 13 centimeters in diameter, with a hole in the center large enough to pass the crucible partly through, leaving about 1 centimeter of the crucible above the shield. The Recipient.--Use a piece of pure silverfoil (rolled silver) about 5 centimeters square, and about 0.02 millimeters in thickness, on which to receive the mercury. It should be large enough to cover the crucible and leave a margin all round of about one-half centimeter. Cooling-aip.--For cooling the silver-foil, use a silver dish of a wide pattern like an evaporating-dish. Silver is a good heat-conductor. A copper dish could be used. The bottom of the dish should be a little larger than the mouth of the crucible. Keep the bottom of the dish polished to enable you to discover any mercury that might soak through the silver-foil. Should this happen, drive off the mercury from the dish by heat, and repeat the assay with new silver-foil and less ore. Flux.--Use iron filings, the finer the better. They should pass a 60-mesh sieve. Remove most of the grease with strong alcohol, and then heat them to...
Author : Walter Lee Brown
Publisher : Unknown
Page : 552 pages
File Size : 49,8 Mb
Release : 2012-02-01
Category : Technology & Engineering
ISBN : 161474002X
Brown's Manual of Assaying was one of the leading assay guides for the miner and metallurgist back in the Late 1800's early 1900's. Many of the Assay methods are still used today. A copy of this book is on the shelves of most metallurgists and Assayers and referenced frequently. Covers Gold and Silver Ores, Copper Ores, Lead Ores, plus tips on spot testing ores, determination of sulfides, and minerals likely to carry gold. Lists of the principal gold, silver, copper, and lead minerals found in the US and more. This rare publication now back in print by Miningbooks.com
Author : Walter Lee Brown
Publisher : Unknown
Page : 554 pages
File Size : 49,7 Mb
Release : 1892
Category : Assaying
ISBN : UIUC:30112113432501
