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 99
Stran iii
... discovery of occurrences of metals and ores throughout the United States , the period covered extending from the earliest known records , including legends , up to the present time . This account has further been supplemented by a ...
... discovery of occurrences of metals and ores throughout the United States , the period covered extending from the earliest known records , including legends , up to the present time . This account has further been supplemented by a ...
Stran v
... DISCOVERY OF GOLD AND SILVER . FIRST DISCOVERIES AND LEGENDS EARLY HISTORY The The East and Southeast : The Southern Appalachian States . Southwest and West : Texas , New Mexico , Arizona and Southern California . - The Northwest ...
... DISCOVERY OF GOLD AND SILVER . FIRST DISCOVERIES AND LEGENDS EARLY HISTORY The The East and Southeast : The Southern Appalachian States . Southwest and West : Texas , New Mexico , Arizona and Southern California . - The Northwest ...
Stran vii
... Discovery of Gold and Silver Mines and Districts 652 TABLE II . Occurrence and Mineralogical Association of Gold and Silver . 660 TABLE III . Geological Distribution of Gold and Silver 682 TABLE IV . Yield of Ores by Districts and Mines ...
... Discovery of Gold and Silver Mines and Districts 652 TABLE II . Occurrence and Mineralogical Association of Gold and Silver . 660 TABLE III . Geological Distribution of Gold and Silver 682 TABLE IV . Yield of Ores by Districts and Mines ...
Stran 3
... discovery of gold the larger part was transients , and as was subsequently shown only ten per cent remained permanently . Of the 90 per cent of those who went to California as a result of the gold excitement , there were many ...
... discovery of gold the larger part was transients , and as was subsequently shown only ten per cent remained permanently . Of the 90 per cent of those who went to California as a result of the gold excitement , there were many ...
Stran 5
... discovery of gold and silver mines , as , for instance , in Australia and South Africa : in the former case a convict colony has risen to a magnificent colonial possession of Great Britain ; in the latter case there was a country ...
... discovery of gold and silver mines , as , for instance , in Australia and South Africa : in the former case a convict colony has risen to a magnificent colonial possession of Great Britain ; in the latter case there was a country ...
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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