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 28
... July , and these gentlemen spent nearly all the remainder of the year in working out the geology and mapping the detailed topography between the Yuba and American Rivers . In the mean time Mr. W. A. Goodyear commenced on the detailed ...
... July , and these gentlemen spent nearly all the remainder of the year in working out the geology and mapping the detailed topography between the Yuba and American Rivers . In the mean time Mr. W. A. Goodyear commenced on the detailed ...
Halaman 29
... observations are made in the central portions of the State , and in closer proximity to the mining region than those of other observers . Months . June ... July August . Total Months . CONDITION OF MINING INDUSTRY - CALIFORNIA . 29.
... observations are made in the central portions of the State , and in closer proximity to the mining region than those of other observers . Months . June ... July August . Total Months . CONDITION OF MINING INDUSTRY - CALIFORNIA . 29.
Halaman 30
... July August . Total Months . November December . 0.000 Sprinkle . Sprinkle . Sprinkle . 0.000 0.000 0.000 0.001 0.000 0.000 0.000 0.000 0.000 0.030 0.549 0.000 0.000 0.000 0.000 0.000 Sprinkle . 0.000 0.000 Sprinkle . Sprinkle . 0.000 ...
... July August . Total Months . November December . 0.000 Sprinkle . Sprinkle . Sprinkle . 0.000 0.000 0.000 0.001 0.000 0.000 0.000 0.000 0.000 0.030 0.549 0.000 0.000 0.000 0.000 0.000 Sprinkle . 0.000 0.000 Sprinkle . Sprinkle . 0.000 ...
Halaman 53
... July , 1871 , and one thousand men have been constantly employed in its construction ; eight hundred of these being Chinamen at one dollar per day , the white men of course receiving higher wages . The total cost of this ditch is ...
... July , 1871 , and one thousand men have been constantly employed in its construction ; eight hundred of these being Chinamen at one dollar per day , the white men of course receiving higher wages . The total cost of this ditch is ...
Halaman 65
... July 4 , 1850. Nos . 1 to 7 of the Herald were printed on foolscap ; single copies sold at fifty cents . The state of society during the flush times - from 1849 to 1853 - was of the worst description , and crime and lawlessness were ...
... July 4 , 1850. Nos . 1 to 7 of the Herald were printed on foolscap ; single copies sold at fifty cents . The state of society during the flush times - from 1849 to 1853 - was of the worst description , and crime and lawlessness were ...
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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