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 15
... mineral deposits from large portions of the earth's crust ; and , in the regions where these mineral deposits do occur ... minerals , thus making known more gen- erally and by more accurate methods the extent and richness of the ore ...
... mineral deposits from large portions of the earth's crust ; and , in the regions where these mineral deposits do occur ... minerals , thus making known more gen- erally and by more accurate methods the extent and richness of the ore ...
Stran 17
... minerals each year to produce 55,000,000 to 60,000,000 ounces of silver , 2,000,000 to 2,250,000 ounces of gold , 350,000,000 to 400,000,000 pounds of copper , 170,000 short tons of lead , 90,000 short tons of zinc , quicksilver to the ...
... minerals each year to produce 55,000,000 to 60,000,000 ounces of silver , 2,000,000 to 2,250,000 ounces of gold , 350,000,000 to 400,000,000 pounds of copper , 170,000 short tons of lead , 90,000 short tons of zinc , quicksilver to the ...
Stran 32
... mineral wealth of California . It reads : " The gold placers dis- covered in the course of the last year have ... Minerals , p . 397 . 4 Min . and Sci . Press , Vol . 47 , p . 292 . That Mexico was just awakening to a realization ...
... mineral wealth of California . It reads : " The gold placers dis- covered in the course of the last year have ... Minerals , p . 397 . 4 Min . and Sci . Press , Vol . 47 , p . 292 . That Mexico was just awakening to a realization ...
Stran 50
... mineral resources of the territory is unshaken , and those most familiar with them believe that , once secure from Indian depre- dations , and made accessible by the iron rail , Arizona will take 1 Mines and Minerals , Vol . 27 , p ...
... mineral resources of the territory is unshaken , and those most familiar with them believe that , once secure from Indian depre- dations , and made accessible by the iron rail , Arizona will take 1 Mines and Minerals , Vol . 27 , p ...
Stran 54
... Mineral Resources of the West , J. R. Browne , 1867 , p . 13 . 3 California Mines and Minerals , Spec . Vol . of T. A. I. M. E. , p . 395 , and Min . and Sci . Press , Vol . 47 , p . 292 . he mentions in his book on mineralogy written ...
... Mineral Resources of the West , J. R. Browne , 1867 , p . 13 . 3 California Mines and Minerals , Spec . Vol . of T. A. I. M. E. , p . 395 , and Min . and Sci . Press , Vol . 47 , p . 292 . he mentions in his book on mineralogy written ...
Druge izdaje - Prikaži vse
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