Report of James W. Taylor, on the Mineral Resources of the United States East of the Rocky Mountains [1867]U.S. Government Printing Office, 1868 - 71 strani |
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Stran 8
... profit . A peculiarity of the Colorado gold veins is that they are invariably found richer the deeper they are sunk upon . This rule seems to be without exception , and in no instance is a vein lost except by a break - off in the ...
... profit . A peculiarity of the Colorado gold veins is that they are invariably found richer the deeper they are sunk upon . This rule seems to be without exception , and in no instance is a vein lost except by a break - off in the ...
Stran 21
... profit , deep sinking will be equally successful in the Carolinas . METALLURGICAL TREATMENT . The process of amalgamation still generally prevails in the mining districts enumerated . It consists in reducing auriferous rock to a fine ...
... profit , deep sinking will be equally successful in the Carolinas . METALLURGICAL TREATMENT . The process of amalgamation still generally prevails in the mining districts enumerated . It consists in reducing auriferous rock to a fine ...
Stran 30
... profit nearly equal to the interest on the immense investment . It is difficult to estimate the amounts destined to be absorbed for railways in all the continents , under the direction of the great powers of the world - projected ...
... profit nearly equal to the interest on the immense investment . It is difficult to estimate the amounts destined to be absorbed for railways in all the continents , under the direction of the great powers of the world - projected ...
Stran 40
... profit , and who , likewise , are unwilling to endure the comparative stagnation of the cold season , emigrate either to the east or west . Returning spring , however , brings back as many if not more than departed , eager to begin or ...
... profit , and who , likewise , are unwilling to endure the comparative stagnation of the cold season , emigrate either to the east or west . Returning spring , however , brings back as many if not more than departed , eager to begin or ...
Stran 49
... profit except with cheaper labor or a more thorough and systematic method of mining . The diggings now fall into the hands of the Chinese , who patiently glean the fields abandoned by the whites ; or , where the ground is favorable , it ...
... profit except with cheaper labor or a more thorough and systematic method of mining . The diggings now fall into the hands of the Chinese , who patiently glean the fields abandoned by the whites ; or , where the ground is favorable , it ...
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Report of James W. Taylor, on the Mineral Resources of the United States ... James Wickes Taylor Predogled ni na voljo - 2018 |
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20 per cent aggregate Alder gulch amount artesian assay auriferous average Bannock basin beds belt boring California centre cents per pound claim coast Cobequid hills Colorado considerable copper cretaceous Deer Lodge Deer Lodge county depth discovered discovery distance Drab clay east eastern estimate exploration extent favorable feet formation Fort Benton galena gallon geological gold and silver gold districts gold mining gold-bearing granite Helena inches iron Lake land Laramie Laramie plains lead ledge lignite localities lode Mexico mills mineral Missouri river Montana nearly Nova Scotia ounces Pacific passed placer deposits placer mining portion pre-emption present profit province quantity quartz quartz veins quartzite railroad railway range region rich rock Rocky mountains sandstone Saskatchawan seams shore silurian smelting square miles strata streams sulphurets Summit surface Tangier Territory thickness tion tributary valley vicinity Victoria Virginia City washings western yield