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 ix
... Hill Lode , Coeur d'Alêne Region , Idaho ... 437 • 440 • Square - Sets , Gold Coin Mine , Cripple Creek , Colorado Ten - Inch Square - Set at Durant Mine , Aspen , Colorado Patio Mills at Pachuca , Mexico Glory Hole Mining at the ...
... Hill Lode , Coeur d'Alêne Region , Idaho ... 437 • 440 • Square - Sets , Gold Coin Mine , Cripple Creek , Colorado Ten - Inch Square - Set at Durant Mine , Aspen , Colorado Patio Mills at Pachuca , Mexico Glory Hole Mining at the ...
Stran 41
... hill - side deposits was carried on at Arbacoochee in 1854 , in connection with which mer- cury was used.3 “ Of the yield of gold there is no record , or indeed of anything in 1 Gold - Mining in the Southern Appalachian States ...
... hill - side deposits was carried on at Arbacoochee in 1854 , in connection with which mer- cury was used.3 “ Of the yield of gold there is no record , or indeed of anything in 1 Gold - Mining in the Southern Appalachian States ...
Stran 59
... Hill - the quartz being literally filled with gold . Immediately following the discovery on Gold Hill , and in the same month , rich quartz ledges were discovered on Massachusetts , Ophir and Rich hills by G. D. Roberts . The location ...
... Hill - the quartz being literally filled with gold . Immediately following the discovery on Gold Hill , and in the same month , rich quartz ledges were discovered on Massachusetts , Ophir and Rich hills by G. D. Roberts . The location ...
Stran 60
... Hill in the spring of 1852. These were the first diggings found between the North Fork and Bear River . The Amargoza mine of San Bernardino County and in Death Valley , was discovered by immigrants on their way to the gold fields ...
... Hill in the spring of 1852. These were the first diggings found between the North Fork and Bear River . The Amargoza mine of San Bernardino County and in Death Valley , was discovered by immigrants on their way to the gold fields ...
Stran 63
... Hill and Brindletown , North Carolina . However , the Califorina excite- ment was responsible for the rapid decline of mining in the Southern States beginning with 1849 . Gold was discovered at the Portis mine of eastern North Caro ...
... Hill and Brindletown , North Carolina . However , the Califorina excite- ment was responsible for the rapid decline of mining in the Southern States beginning with 1849 . Gold was discovered at the Portis mine of eastern North Caro ...
Druge izdaje - Prikaži vse
Pogosti izrazi in povedi
Alaska amalgamation andesite argentiferous assay auriferous average bed-rock blende calcite California Carolina cent chalcopyrite chlorination Colorado Comstock lode 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 gold and silver gold production gold-bearing granite gravel gray copper Gulch Hill hydraulic Ibid Idaho igneous rocks inches iron Jour lead limestone located mercury method Mexico mill Mineral Industry Mineral Resources Mines and Minerals Montana Mountain Nevada North North Carolina occur operations ore-bodies ounces output oxide placer mines placers porphyry precious metals Press probably production of gold pyrite quantities quartz quartz-veins Rept River roasting rocks schists shaft silver production Silver-bearing slate sluices smelting solution South stamps stope sulphides sulphurets surface TABLE tellurides tellurium tetrahedrite timber tion tons Total tunnel usually Utah veins width yield zinc