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 |
Iz vsebine knjige
Zadetki 1–5 od 100
Stran vii
... TABLES . TABLE I. 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 ...
... TABLES . TABLE I. 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 ...
Stran 279
... table on the occur- rence and mineralogical association of ores has been prepared , see tables following Chapter VII . ( Appendix of Tables . ) 1 T. A. I. M. E. , Vol . 8 , p . 488 ; Geol . Wis . Vol . 1 , 1873–79 , p . 661 ; Ibid ...
... table on the occur- rence and mineralogical association of ores has been prepared , see tables following Chapter VII . ( Appendix of Tables . ) 1 T. A. I. M. E. , Vol . 8 , p . 488 ; Geol . Wis . Vol . 1 , 1873–79 , p . 661 ; Ibid ...
Stran 329
... table has been prepared ( see table of Geological Occurrence of Gold and Silver ) , by means of which the importance of the various periods as precious metal producers and their relation to the different dis- tricts can more readily be ...
... table has been prepared ( see table of Geological Occurrence of Gold and Silver ) , by means of which the importance of the various periods as precious metal producers and their relation to the different dis- tricts can more readily be ...
Stran 364
... table of the standard miner's inch : 2 Cubic Feet ( each 6.23 Gallons ) Pressure from Surface Min- to Top or Middle of Orifice . er's Authority . Inch . Per Per Second . Minute . Per Hour . Per 24 Hours . 6 inches . Do. Do. Do. 1 0.039 ...
... table of the standard miner's inch : 2 Cubic Feet ( each 6.23 Gallons ) Pressure from Surface Min- to Top or Middle of Orifice . er's Authority . Inch . Per Per Second . Minute . Per Hour . Per 24 Hours . 6 inches . Do. Do. Do. 1 0.039 ...
Stran 399
... tables are used on dredgers the gravel from the screens usually passes directly to them . These tables are arranged on either side of the screen , especially if it is of the revolving type , and are covered with cocoa matting alone or ...
... tables are used on dredgers the gravel from the screens usually passes directly to them . These tables are arranged on either side of the screen , especially if it is of the revolving type , and are covered with cocoa matting alone or ...
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Pogosti izrazi in povedi
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