Silver and Gold: An Account of the Mining and Metallurgical Industries of the United States |
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الصفحة 13
... hundred miles , and a breadth of over two hundred miles , its area being estimated at 154,000 square miles . The State is divided into forty - nine counties , and in twenty - four of these counties mining is carried on to a greater or ...
... hundred miles , and a breadth of over two hundred miles , its area being estimated at 154,000 square miles . The State is divided into forty - nine counties , and in twenty - four of these counties mining is carried on to a greater or ...
الصفحة 14
... hundred and thirty - four sets of these blanks were dispatched , and these elicited but thirty - one replies , though in some cases the returns were comprehensive and valuable . In 1870 , the deep placers of Nevada , Yuba , and Placer ...
... hundred and thirty - four sets of these blanks were dispatched , and these elicited but thirty - one replies , though in some cases the returns were comprehensive and valuable . In 1870 , the deep placers of Nevada , Yuba , and Placer ...
الصفحة 22
... hundred feet deep , all of which , though useless to the man without means , can , with the aid of capital , be made to yield up their treasures with profit . To work this class of mines to advantage it becomes necessary that a large ...
... hundred feet deep , all of which , though useless to the man without means , can , with the aid of capital , be made to yield up their treasures with profit . To work this class of mines to advantage it becomes necessary that a large ...
الصفحة 23
... hundred miles from the point of diversion on the Truckee River , the outlet of Lake Tahoe . Sacramento , Vallejo , Oakland , and other cities along the route of the main aqueduct , are also to be supplied with water . The construction ...
... hundred miles from the point of diversion on the Truckee River , the outlet of Lake Tahoe . Sacramento , Vallejo , Oakland , and other cities along the route of the main aqueduct , are also to be supplied with water . The construction ...
الصفحة 24
... hundred to two thousand acres each , situated in the Sierra Nevada Mountains , in El Dorado County , at an elevation of from three to five thousand feet above the sea . These lakes are fed by streams from mountain peaks and gorges of ...
... hundred to two thousand acres each , situated in the Sierra Nevada Mountains , in El Dorado County , at an elevation of from three to five thousand feet above the sea . These lakes are fed by streams from mountain peaks and gorges of ...
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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 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