Statistics of Mines and Mining in the States and Territories West of the Rocky Mountains: Being the ... Annual Report, Utgave 2U.S. Government Printing Office, 1873 |
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Statistics of Mines and Mining in the States and Territories West ..., Utgave 3 Uten tilgangsbegrensning - 1872 |
Statistics of Mines and Mining in the States and Territories West of the ... Rossiter Worthington Raymond Uten tilgangsbegrensning - 1877 |
Statistics of Mines and Mining in the States and Territories West ..., Utgave 8 Rossiter Worthington Raymond Uten tilgangsbegrensning - 1877 |
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50 feet amalgam amount antimony arrastra assay average Bannack base bullion bed-rock bullion Calaveras County California Cañon carbonate cent chemical claim coal commenced company's contains copper cost County course Creek Cupellation December deposits depth developed district ditch drift drill east El Dorado County engine erected Eureka expense extracted feet deep feet in length feet long feet wide furnace galena gangue gold Gold Hill gravel ground Gulch Hill hundred hydraulic inches incline iron labor lead ledge limestone located lode machinery metal metallurgy miles mill miners Mining Company months nearly Nevada opened operations ounces owners placer mines pounds present Professor prospecting quantity quartz quartzite rich River rock San Francisco silver slag slate smelting smelting-works stamps stopes sulphurets sunk supply surface Table Mountain thick tion tons Total tunnel Tuolumne County tuyeres Valley vein width yield