Hints on Amalgamation and the General Care of Gold Mills PDF ePub eBook

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Hints on Amalgamation and the General Care of Gold Mills free pdf 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. 1899 edition. Excerpt: ... introduction. Gold has been known from the earliest ages, from its occurrence in a metallic state in sedimentary deposits as well as in veins. "On account of its great specific gravity, it can be collected from placers and river beds, by separation with water alone, and in veins after the matrix is crushed, a great amount is saved by the same simple method. When only rich deposits were exploited, anybody could manage as it apparently required only labor and opportunity, while as long as money was made, the losses that occurred did not trouble the owners. From this very simplicity of working, the majority of owners and investors imagined that no special training was requisite to insure success, but that any trustworthy man, skilled in mercantile pursuits, was the proper person for the place of general manager. To-day the same opinion is held by very many, in spite of the warnings from hosts of disastrous failures. One cause for this belief has been the lack of literature for this special branch of metallurgy- in fact, very near 1890, there was practically no works written at all which spoke of gold except as a subsidiary product of the metallurgy of other metals. Volumes, both practical and scientific, have been published which deal with the special branches of the metallurgy of lead, copper, and silver, but the metallurgy of gold seemed so simple, it only required an occasional article in a paper or magazine. In spite of this dearth of written knowledge, practical men in all parts of the world were rapidly improving the methods of treatment, both mechanically and with the aid of chemistry, in their several localities- but, through lack of exchange of thought, each section had a different process, on which faith was pinned to the...

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Details Book

Author : William James Adams
Publisher : Theclassics.Us
Data Published : 12 September 2013
ISBN : 1230228799
EAN : 9781230228792
Format Book : PDF, Epub, DOCx, TXT
Number of Pages : 28 pages
Age + : 15 years
Language : English
Rating :

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