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 4
... probably have been a mixture of pure Castilian and the Indo - Span- iard with the Western pioneer , the Kanak , the Mongolian and the Mormon . Social and educational standards would have been low , while industrial progress would have ...
... probably have been a mixture of pure Castilian and the Indo - Span- iard with the Western pioneer , the Kanak , the Mongolian and the Mormon . Social and educational standards would have been low , while industrial progress would have ...
Stran 18
... probably : lack of proper foresight in the develop- ment and equipment of the property ; extreme positions taken by the management , i.e. , either too lavish expenditure in equipment , or lack of appreciation to provide sufficient funds ...
... probably : lack of proper foresight in the develop- ment and equipment of the property ; extreme positions taken by the management , i.e. , either too lavish expenditure in equipment , or lack of appreciation to provide sufficient funds ...
Stran 24
... probably at least four hundred years ago . If this is true there is little wonder that traditions are scarce and fragmen- tary.2 Naturally , most of their legends related to copper , but as Mr. Whittlesey points out , this was ...
... probably at least four hundred years ago . If this is true there is little wonder that traditions are scarce and fragmen- tary.2 Naturally , most of their legends related to copper , but as Mr. Whittlesey points out , this was ...
Stran 25
... Probably the first mention of the discovery of native copper is made in the " Relations de ce que s'est passe de plus remarquable aux Missions des peres de la compagnie de Jesus au la Nouvelle France " for 1659-60 , which cites the ...
... Probably the first mention of the discovery of native copper is made in the " Relations de ce que s'est passe de plus remarquable aux Missions des peres de la compagnie de Jesus au la Nouvelle France " for 1659-60 , which cites the ...
Stran 26
... probably his western base of supplies while on his conquering march through the Creek , Seminole and Cherokee nations . The Chattahoochee and Chestatee rivers , as well as other streams trav- ersing the gold belt , have been productive ...
... probably his western base of supplies while on his conquering march through the Creek , Seminole and Cherokee nations . The Chattahoochee and Chestatee rivers , as well as other streams trav- ersing the gold belt , have been productive ...
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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