Silver and Gold: An Account of the Mining and Metallurgical Industries of the United States |
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Halaman 15
... months , with a view of testing the yield of gravel , and the expense of treatment by mill process , at French Corral . I am also under obligations to Messrs . Cronise and Cross- man , and to Dr. Henry De Groot , of San Francisco ; also ...
... months , with a view of testing the yield of gravel , and the expense of treatment by mill process , at French Corral . I am also under obligations to Messrs . Cronise and Cross- man , and to Dr. Henry De Groot , of San Francisco ; also ...
Halaman 21
... months and be able to maintain themselves permanently at this advance . English promoters have made the further mistake of exacting an inordinate commission for their services , necessitating the holders of mines to stock them at ...
... months and be able to maintain themselves permanently at this advance . English promoters have made the further mistake of exacting an inordinate commission for their services , necessitating the holders of mines to stock them at ...
Halaman 29
... are made in the central portions of the State , and in closer proximity to the mining region than those of other observers . Months . $ 0.003 0.000 Sprinkle . Sprinkle . Sprinkle CONDITION OF MINING INDUSTRY - CALIFORNIA . 29.
... are made in the central portions of the State , and in closer proximity to the mining region than those of other observers . Months . $ 0.003 0.000 Sprinkle . Sprinkle . Sprinkle CONDITION OF MINING INDUSTRY - CALIFORNIA . 29.
Halaman 30
... Months . $ 0.003 0.000 Sprinkle . Sprinkle . Sprinkle . March April May June . July August Total 4. 250 1. 140 0. 190 3.500 1.500 4.320 2. 132 Sprinkle . 1.214 0.981 2.874 0.475 0.250 0.690 0.300 1.450 0.210 1. 150 1.841 Sprinkle ...
... Months . $ 0.003 0.000 Sprinkle . Sprinkle . Sprinkle . March April May June . July August Total 4. 250 1. 140 0. 190 3.500 1.500 4.320 2. 132 Sprinkle . 1.214 0.981 2.874 0.475 0.250 0.690 0.300 1.450 0.210 1. 150 1.841 Sprinkle ...
Halaman 31
... months of the season , up to end of December , has reached 12.02 inches at Sacramento . It is now believed the fall ... month of December , 1871 . Date . Mean daily bar o me . ter . Mean daily thermom- eter . Rain- fall . Inches ...
... months of the season , up to end of December , has reached 12.02 inches at Sacramento . It is now believed the fall ... month of December , 1871 . Date . Mean daily bar o me . ter . Mean daily thermom- eter . Rain- fall . Inches ...
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50 feet amalgam amount antimony arrastra assay average Bannack base bullion bed-rock bullion Calaveras County California Caņon 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 metallurgy metals 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 tailings thick tion tons Total tunnel Tuolumne County tuyeres Valley vein width yield