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
... Creek , Colorado Ten - Inch Square - Set at Durant Mine , Aspen , Colorado facing 452 455 457 460 Patio Mills at Pachuca , Mexico Surface Plant and Dumps , Portland Mine , Cripple Creek , Colorado . facing 509 524 ABBREVIATIONS . Eng ...
... Creek , Colorado Ten - Inch Square - Set at Durant Mine , Aspen , Colorado facing 452 455 457 460 Patio Mills at Pachuca , Mexico Surface Plant and Dumps , Portland Mine , Cripple Creek , Colorado . facing 509 524 ABBREVIATIONS . Eng ...
Stran 44
... Creek , which , in 1893 , were worked extensively . The Big Salmon River was prospected by a small party of miners ... creeks were prob- ably those referred to by this party . The latter is probably named after the head of the party ...
... Creek , which , in 1893 , were worked extensively . The Big Salmon River was prospected by a small party of miners ... creeks were prob- ably those referred to by this party . The latter is probably named after the head of the party ...
Stran 46
... Creek district in 1893 , with their subsidiary locations , all of which form connecting links in a chain of events continuous , but far from permanent in char- acter . The effects upon the development of the country have , however ...
... Creek district in 1893 , with their subsidiary locations , all of which form connecting links in a chain of events continuous , but far from permanent in char- acter . The effects upon the development of the country have , however ...
Stran 51
... creeks . The discovery and development of the Silver King mine is impor- tant in that it was largely through such efforts that ... Creek , and began the construction of a pack- road into the mountains . This pack - road commonly known as ...
... creeks . The discovery and development of the Silver King mine is impor- tant in that it was largely through such efforts that ... Creek , and began the construction of a pack- road into the mountains . This pack - road commonly known as ...
Stran 58
... Creek , the west branch of the Feather ; while on July 4 , 1848 , he located Bidwell's Bar three miles above the present town of Oroville . On May 16 , 1848 , Claude Chana discovered gold in Auburn Ravine , which locality was later ...
... Creek , the west branch of the Feather ; while on July 4 , 1848 , he located Bidwell's Bar three miles above the present town of Oroville . On May 16 , 1848 , Claude Chana discovered gold in Auburn Ravine , which locality was later ...
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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