Silver and Gold: An Account of the Mining and Metallurgical Industries of the United States |
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Halaman 13
... principal mining region lies on the western slope of the Sierra Nevada , near the central portion of the State , but several important districts are found in the extreme northern and southern parts of the State , as well as on the ...
... principal mining region lies on the western slope of the Sierra Nevada , near the central portion of the State , but several important districts are found in the extreme northern and southern parts of the State , as well as on the ...
Halaman 14
... principal towns : OFFICE U. S. COMMISSIONER MINING STATISTICS , 37 Park Row , New York . DEAR SIR : Being desirous ... principal mines - quartz and placer - in your district . A list of the stamp - mills in your district , with number of ...
... principal towns : OFFICE U. S. COMMISSIONER MINING STATISTICS , 37 Park Row , New York . DEAR SIR : Being desirous ... principal mines - quartz and placer - in your district . A list of the stamp - mills in your district , with number of ...
Halaman 23
... Principal hydraulic enterprises . - Standing at the head of this category we have the gigantic scheme of Colonel J. W. Von Schmidt , proposing to take the water from Lake Tahoe , and , carrying it through the Sierra Nevada by a tunnel ...
... Principal hydraulic enterprises . - Standing at the head of this category we have the gigantic scheme of Colonel J. W. Von Schmidt , proposing to take the water from Lake Tahoe , and , carrying it through the Sierra Nevada by a tunnel ...
Halaman 38
... principal objection heretofore urged against dry working is dust . This I have overcome by using incased batteries or crushing - machines , then pulverizing ore in in- cased barrels , which are both self - feeding and self - discharging ...
... principal objection heretofore urged against dry working is dust . This I have overcome by using incased batteries or crushing - machines , then pulverizing ore in in- cased barrels , which are both self - feeding and self - discharging ...
Halaman 47
... principal streams , running from east to west , and crossing the course of the ancient streams , viz : the Merced , Tuolumne , Stanislaus , and Mokelumne rivers , which , with their tributaries , have acted as distri- butors of the ...
... principal streams , running from east to west , and crossing the course of the ancient streams , viz : the Merced , Tuolumne , Stanislaus , and Mokelumne rivers , which , with their tributaries , have acted as distri- butors of the ...
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50 feet amalgam amount antimony arrastra assay average Bannack base bullion bed-rock bullion Calaveras County California CaƱon 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