"There are, scattered throughout the country, enormous amounts of rock that, by the discovery of a quick, cheap, and practiable sic method of extracting their metallic content could be turned into valuable ores. This has already been accomplished for gold and silver by the adaption of the cyanide method to their treatment. The next in order, both because of the value of the metal and the amount of material available in mill dumps and in the ground, is copper. there are dumps containing millions of tons of this material lying idle because of the fact that with the present methods of treatment, it can not be handled at a profit"--page 1.
Mann, Horace T.
B.S. in Mining Engineering
Missouri School of Mines and Metallurgy
ii, 15 pages
© 1914 Howard Gove Halsey and Frederick Gallaway Moses, All rights reserved.
Thesis - Open Access
Copper -- Metallurgy
Print OCLC #
Electronic OCLC #
Link to Catalog Recordhttp://merlin.lib.umsystem.edu/record=b2609844~S5
Halsey, Howard Gove and Moses, Frederick Gallaway, "Leaching copper tailings" (1914). Bachelors Theses. 151.