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 iii
... further been supplemented by a tabulated list of first discoveries , by whom and when made , and finally an extended chronology of the economic history of gold and silver mining is given . • Reference to the theory of ore - deposits has ...
... further been supplemented by a tabulated list of first discoveries , by whom and when made , and finally an extended chronology of the economic history of gold and silver mining is given . • Reference to the theory of ore - deposits has ...
Stran iv
... Further , the historical development of mining , milling and metallurgy has been outlined at length . The discussion of the production of the precious metals in the United States has been given in detail , being considered as a whole ...
... Further , the historical development of mining , milling and metallurgy has been outlined at length . The discussion of the production of the precious metals in the United States has been given in detail , being considered as a whole ...
Stran 6
... further , what was ultimately to be of great importance was a demand for means of transporting such supplies , together with the miners and traders passing to and from these gold fields . A still further and subsequent effect was the ...
... further , what was ultimately to be of great importance was a demand for means of transporting such supplies , together with the miners and traders passing to and from these gold fields . A still further and subsequent effect was the ...
Stran 8
... Further , the rapid extension of the railway systems of the West is largely due to the ore traffic , and by the enlarged facilities for transportation the producers of remote districts can market their mineral products , while the smelt ...
... Further , the rapid extension of the railway systems of the West is largely due to the ore traffic , and by the enlarged facilities for transportation the producers of remote districts can market their mineral products , while the smelt ...
Stran 21
... Further , extreme climatic conditions coupled with scourges of disease may have eliminated portions of tribes who perchance had acquired such information , either through their own efforts or on the discovery of other people's work ...
... Further , extreme climatic conditions coupled with scourges of disease may have eliminated portions of tribes who perchance had acquired such information , either through their own efforts or on the discovery of other people's work ...
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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