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 21
... 1859 . 2 Hernando de Soto , by Charles E. Jones , Jr. , Savannah , 1880 . American Antiquarian , Vol . 15 , 1893 , pp . 67 , 152 . limited extent , were employed in the fabrication of ornaments DISCOVERY OF GOLD AND SILVER . 21.
... 1859 . 2 Hernando de Soto , by Charles E. Jones , Jr. , Savannah , 1880 . American Antiquarian , Vol . 15 , 1893 , pp . 67 , 152 . limited extent , were employed in the fabrication of ornaments DISCOVERY OF GOLD AND SILVER . 21.
Stran 22
... employed in the fabrication of ornaments . Small masses of these precious metals were picked up by the natives in pockets , or gathered in the beds of streams flowing through auriferous regions , and perforated and worn as pendants ...
... employed in the fabrication of ornaments . Small masses of these precious metals were picked up by the natives in pockets , or gathered in the beds of streams flowing through auriferous regions , and perforated and worn as pendants ...
Stran 40
... employed for the earlier history . The chrono- logical order between states , as previously employed , will then Rept . on the Geol . and Topography of a Portion of the Lake Superior Land District in the State of Michigan , Doc . No. 69 ...
... employed for the earlier history . The chrono- logical order between states , as previously employed , will then Rept . on the Geol . and Topography of a Portion of the Lake Superior Land District in the State of Michigan , Doc . No. 69 ...
Stran 74
... employed . Loon Creek proved an attractive place for miners in 1870 , and for Chinese as late as 1879 , when they were driven out by the Indians . The Ramshorn mine , Bayhorse , Custer County , was the deepest and best developed copper ...
... employed . Loon Creek proved an attractive place for miners in 1870 , and for Chinese as late as 1879 , when they were driven out by the Indians . The Ramshorn mine , Bayhorse , Custer County , was the deepest and best developed copper ...
Stran 116
... employed by the Indians , in hollow reeds . He also reported gold as being found in the Appalachian Mountains . 1579 . Sir Francis Drake touched the coast of California , and reported gold as occurring in abundance . 1610 . After the ...
... employed by the Indians , in hollow reeds . He also reported gold as being found in the Appalachian Mountains . 1579 . Sir Francis Drake touched the coast of California , and reported gold as occurring in abundance . 1610 . After the ...
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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