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 iv
... production of the precious metals in the United States has been given in detail , being considered as a whole , with the various other producing countries and by individual states . Much tabulated data is also given which often ...
... production of the precious metals in the United States has been given in detail , being considered as a whole , with the various other producing countries and by individual states . Much tabulated data is also given which often ...
Stran vii
... PRODUCTION 564 578 PRODUCTION OF THE UNITED STATES PRODUCTION BY STATES AND TERRITORIES The Southern States , Alaska , Arizona , California , Canada ( The Silver Islet Mine ) , Colorado , Idaho , Montana , Nevada , New Mexico , Oregon ...
... PRODUCTION 564 578 PRODUCTION OF THE UNITED STATES PRODUCTION BY STATES AND TERRITORIES The Southern States , Alaska , Arizona , California , Canada ( The Silver Islet Mine ) , Colorado , Idaho , Montana , Nevada , New Mexico , Oregon ...
Stran 6
... produce for a few seasons , yet without due fertilization annually thereafter it cannot remain a permanent agricultural ... production of gold which occurred during the middle of the last century a great impetus was given to commerce . A ...
... produce for a few seasons , yet without due fertilization annually thereafter it cannot remain a permanent agricultural ... production of gold which occurred during the middle of the last century a great impetus was given to commerce . A ...
Stran 8
... production of pig iron to 9,000,000 tons ; her lead production , how- ever , has declined to 20,000 tons , and her production of copper has become a negligible quantity ; her tin production has not increased . " Meanwhile our production ...
... production of pig iron to 9,000,000 tons ; her lead production , how- ever , has declined to 20,000 tons , and her production of copper has become a negligible quantity ; her tin production has not increased . " Meanwhile our production ...
Stran 13
... production of gold dur- ing the thirty years prior to 1881 was of vast proportions , its influ- ence was extended by means of credit and confidence in its security , by almost arithmetical proportion . No figures or calculations can ...
... production of gold dur- ing the thirty years prior to 1881 was of vast proportions , its influ- ence was extended by means of credit and confidence in its security , by almost arithmetical proportion . No figures or calculations can ...
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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