Gold and Silver: Comprising an Economic History of Mining in the United States, the Geographical and Geological Occurrence of the Precious Metals, with Their Mineralogical Associations, History and Description of Methods of Mining and Extraction of Values, and a Detailed Discussion of the Production of Gold and Silver in the World and the United StatesJ. Wiley & Sons, 1908 - 727 strani |
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Zadetki 1–5 od 100
Stran ix
... Mountain , Gray's Peak , Argentine Pass , Montezuma , Colorado , facing 218 Dahlonega and Vicinity , Georgia 225 ... Mountains , New Mexico facing 254 Gold Mining Region of Eastern Oregon 258 Map of Porto Rico . 261 Map of the Mercur ...
... Mountain , Gray's Peak , Argentine Pass , Montezuma , Colorado , facing 218 Dahlonega and Vicinity , Georgia 225 ... Mountains , New Mexico facing 254 Gold Mining Region of Eastern Oregon 258 Map of Porto Rico . 261 Map of the Mercur ...
Stran 3
... mountains thirty miles away ; the rafters lashed with raw - hide instead of being nailed ; the old red tiles made by ... mountain side where a city rider would hardly dare to lead a horse . - " Rude was their system of justice ; but they ...
... mountains thirty miles away ; the rafters lashed with raw - hide instead of being nailed ; the old red tiles made by ... mountain side where a city rider would hardly dare to lead a horse . - " Rude was their system of justice ; but they ...
Stran 15
... mountain side , and the average intelligence and aptness of the American miner has been such that he has gained a vast amount of practical information in this way . But , from time to time during the past several decades , the young min ...
... mountain side , and the average intelligence and aptness of the American miner has been such that he has gained a vast amount of practical information in this way . But , from time to time during the past several decades , the young min ...
Stran 21
... mountains ( Appalachian ) , from the base of which flows a torrent rich in gold , or , as the Indians think , in copper , for from this stream they draw up sand in a hollow cane - like reed until it is full , then by shaking and jarring ...
... mountains ( Appalachian ) , from the base of which flows a torrent rich in gold , or , as the Indians think , in copper , for from this stream they draw up sand in a hollow cane - like reed until it is full , then by shaking and jarring ...
Stran 30
... mountains : " In the year 1769 , a region of virgin silver was discovered on the frontier of the Apaches , a tribe exceedingly war - like and brave , at the place called Arizona , on a mountain ridge , which hath been named by its ...
... mountains : " In the year 1769 , a region of virgin silver was discovered on the frontier of the Apaches , a tribe exceedingly war - like and brave , at the place called Arizona , on a mountain ridge , which hath been named by its ...
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Alaska amalgamation andesite argentiferous assay auriferous average bed-rock blende bornite calcite California Carolina cent chalcopyrite chloride chlorination Colorado Comstock lode concentration considerable copper country-rock County Cripple Creek cyanide cyanide process Deep Mines deposits depth diorite discovered discovery district dollars drift employed extraction feet free-gold furnace galena gangue gneiss gold and silver gold production Gold-bearing granite gravel gray copper Gulch Hill hydraulic Ibid Idaho inches iron Jour lead limestone located mercury method Mexico mill Mineral Industry Mineral Resources Mines and Minerals Montana Mountain Nevada North occur operations ore-bodies ounces output oxide placer mines placers porphyry precious metals Press probably production of gold pyrite pyrrhotite quantities quartz quartz-veins quartzites Rept rhyolite River rocks schists shaft siliceous silver production Silver-bearing slate sluices smelting solution South stamps stope sulphides sulphurets surface TABLE tellurides tellurium tetrahedrite timber tion tons Total tunnel Utah yield zinc