"Statement of Problem: Metallurgy of Gold, etc.
Required, description of process and machinery used in the extraction of Gold and Silver from earthy and siliceous ores as found in California, the ores being represented by the following- SiO2, 91.44; (Zn,Pb)+Cu2S, 1.38; Al2O3, Fe2O3, etc. 6.39; Au, .0017, Ag2S .12, Variable in 1st, 2nd, and 3rd class ores.
1° - The methods, etc. employed in treating 1st class ores, -such as exceed in value $150 per ton.
2° - Methods, etc. in treating 2nd class ores, such as ore valued at less than $150 per ton.
Give in detail the chemistry of each process described, also illustrated by drawings of machinery &c. for crushing, separating, retorting, melting, casting, etc.
Give as nearly as possible the commercial values of all products and by-products.
Separation of gold and silver is included in this"--pages 3-4.
Materials Science and Engineering
Professional Degree in Metallurgical Engineering
Missouri School of Mines and Metallurgy
30 pages, 6 plates
Comstock Lode, Nevada
© 1878 L. R. Grabill, All rights reserved.
Thesis - Open Access
Gold ores -- Nevada
Silver ores -- Nevada
Print OCLC #
Electronic OCLC #
Link to Catalog Record
Grabill, Lee R., "Treatment of gold and silver ores as found in the Comstock Lode" (1878). Professional Degree Theses. 11.