Author: Mears Chlorination Company, Philadelphia
Publisher:
ISBN:
Category : Gold mines and mining
Languages : en
Pages : 222

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Author: George W Baker
Publisher: Legare Street Press
ISBN: 9781016314169
Category :
Languages : en
Pages : 0

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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 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. 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: George W Baker
Publisher: Theclassics.Us
ISBN: 9781230394985
Category :
Languages : en
Pages : 32

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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. 1880 edition. Excerpt: ... tailings contained, and seldom as much as two ounces of gold." Prof. Raymond's Report, 1870, page 364: --"It is impossible to state accurately what percentage of gold is lost in milling, as few assays are made either of the crude ore or of the tailings; but that a very large amount is lost can.not be doubted, and this loss probably varies from thirty to seventy per cent., according to the nature of the ore. None of the silver is saved except a small quantity, which being obtained in the gold, merely diminishes the value of the latter metal." Fossett's Colorado, page 292: --"It is estimated that more gold has been wasted in milling and has been washed down the creeks and gulches than has been saved." Albert Reiehenecker see Appendix, page 80 et seq). "The proportion of gold saved on the plates and tables varies, in a well-constructed mill, between thirty and fifty per cent. of the whole amount of gold in the quartz, and may average forty per cent." Article XII. THE PRESENT CONDITION OF INDUSTRIAL GOLD MINING. It will be apparent from these brief outlines that gold mining as an industrial pursuit encompasses interests of immense importance when the whole field of enterprise is brought into Tiew. The sources of the metal are practically beyond the measure of any method of calculation. The great extent of mineral area, the cosmical profusion displayed in nature with reference to all deposits of useful metals and substances, the expansive surface exploited and depths attained by practical working in widely-varying and separated localities, all tend to demonstrate the number and magnitude of workable veins of gold. In connection with this, it is also apparent that great progress has.been made in structural and...

Author: George W Baker
Publisher: Scholar's Choice
ISBN: 9781297259609
Category :
Languages : en
Pages : 110

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Book Description
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: United States. Congress. Senate. Special Committee to Study Problems of American Small Business
Publisher:
ISBN:
Category : Gold mines and mining
Languages : en
Pages : 24

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Author: United States. Congress. House. Committee on Interior and Insular Affairs. Subcommittee on Mines and Mining
Publisher:
ISBN:
Category : Gold mines and mining
Languages : en
Pages : 278

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Committee Serial No. 89-34. Considers H.R. 799 and related bills, to revitalize U.S. gold production by authorizing Interior Dept to subsidize operational costs of established mines and costs of establishing new mines, and to establish Gold Procurement and Sales Agency within Interior Dept.

Author:
Publisher:
ISBN:
Category : Engineering
Languages : en
Pages : 470

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Author: Roger Relf Howe
Publisher:
ISBN:
Category : Gold industry
Languages : en
Pages : 346

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The domestic gold mining industry has changed substantially as production has increased sharply since 1980. This thesis seeks to review the fundamental economic and technologic changes contributing to increased production and to present an analysis of the components of present mine supply. The sustained higher gold price in real terms has been the driving force behind rapidly increasing domestic gold production. Developments in open pit mining methods, heap leaching technology, and carbon-in-pulp technology have contributed to lower production costs. Higher prices and lower costs have resulted in very attractive profit margins, enabling the industry to raise substantial capital to develop new mines through equity offerings and gold loans. Numerous discoveries of large-tonnage, low-grade deposits in the Western United States, particularly Nevada, have resulted in many major mines commencing production since 1980. Nevada has rapidly become the dominant gold producing state, providing nearly 56% of total domestic output in 1987. The Carlin trend in northeast Nevada is now recognised as the largest proven gold belt in the western hemisphere. The other major gold producing states, in order of descending 1987 production, are California, South Dakota, Montana, Washington, Utah, Colorado, and Alaska.

Author: Wigan (England). Free Public Library. Reference Dept
Publisher:
ISBN:
Category :
Languages : en
Pages : 352

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Author: United States. Congress. House. Committee on Interior and Insular Affairs. Subcommittee on Mines and Mining
Publisher:
ISBN:
Category : Gold mines and mining
Languages : en
Pages : 236

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Book Description
Committee Serial No. 90-7. Considers. H.R. 742 and similar H.R. 3042, H.R. 3274, H.R. 3275, H.R. 3951, H.R. 4250, H.R. 5344, H.R. 5418, to authorize the Gold Mines Assistance Commission to provide production assistance funds total bullion produced by new or established mines. H.R. 8803 and related H.R. 9899 and H.R. 10097, to authorize Treasury Dept to provide grants-in-aid to states to subsidize up to 90% of state aid to gold mining and production.