Silver and Gold: an Account of the Mining and Metallurgical Industry of the United States: With Reference Chiefly to the Precious MetalsJ.B. Ford, 1873 - 566 halaman |
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Halaman 5
... Nevada III . Idaho and Oregon IV . Montana V. Utah ... VI . Arizona VII . New Mexico . VIII . Colorado Page . 1 7 141 250 258 300 331 337 340 367 IX . Wyoming PART II . - Metallurgical processes : Chapter X. The smelting of ...
... Nevada III . Idaho and Oregon IV . Montana V. Utah ... VI . Arizona VII . New Mexico . VIII . Colorado Page . 1 7 141 250 258 300 331 337 340 367 IX . Wyoming PART II . - Metallurgical processes : Chapter X. The smelting of ...
Halaman 22
... Nevada County , 1,535 acres , ) insuring a sufficiency of ground for carrying on extended operations for many years to come . In like manner , where vein - mining is to be engaged in , it has become the custom , at least with the more ...
... Nevada County , 1,535 acres , ) insuring a sufficiency of ground for carrying on extended operations for many years to come . In like manner , where vein - mining is to be engaged in , it has become the custom , at least with the more ...
Halaman 23
... Nevada and Newark and Nevada and San Francisco is something like $ 34 per ton in favor of the last - named place , while considerable gain is realized in the greater quickness with which returns are made , involving a saving of interest ...
... Nevada and Newark and Nevada and San Francisco is something like $ 34 per ton in favor of the last - named place , while considerable gain is realized in the greater quickness with which returns are made , involving a saving of interest ...
Halaman 24
... Nevada Mountains , in El Dorado County , at an elevation of from three to five thousand feet above the sea . lakes are fed by streams from mountain peaks and gorges of perpetual snow , and are capable of furnishing a constant stream of ...
... Nevada Mountains , in El Dorado County , at an elevation of from three to five thousand feet above the sea . lakes are fed by streams from mountain peaks and gorges of perpetual snow , and are capable of furnishing a constant stream of ...
Halaman 32
... Nevada City , and Mr. R. Hoskins , of Dutch Flat , which are described in the report for 1871 , pages 63 to 65. I doubted last year whether 1,000 inches of water could be successfully thrown through one nozzle in hydraulic mining . That ...
... Nevada City , and Mr. R. Hoskins , of Dutch Flat , which are described in the report for 1871 , pages 63 to 65. I doubted last year whether 1,000 inches of water could be successfully thrown through one nozzle in hydraulic mining . That ...
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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 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 tailings thick tion tons Total tunnel Tuolumne County tuyeres Valley vein width yield