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 iii
... present time . This account has further been supplemented by a tabulated list of first discoveries , by whom and when made , and finally an extended chronology of the economic history of gold and silver mining is given . Reference to ...
... present time . This account has further been supplemented by a tabulated list of first discoveries , by whom and when made , and finally an extended chronology of the economic history of gold and silver mining is given . Reference to ...
Stran 5
... present day only a relatively small part of the tillable land of the United States is under a proper state of cultivation ; vast regions remain untouched , and as there cannot be successful agriculture or any form of business without ...
... present day only a relatively small part of the tillable land of the United States is under a proper state of cultivation ; vast regions remain untouched , and as there cannot be successful agriculture or any form of business without ...
Stran 6
... present time for sentimental reasons . On a cold , hard basis of facts and figures it will be found that not over five per cent of the limited acreage of dredging ground in this state ( California ) was orchard , vineyard , or planted ...
... present time for sentimental reasons . On a cold , hard basis of facts and figures it will be found that not over five per cent of the limited acreage of dredging ground in this state ( California ) was orchard , vineyard , or planted ...
Stran 8
... present , cheaper to bring the ore to the fuel ( and to the people who buy and consume the iron ) , than to take the fuel to the ore and carry back most of the finished product . ore . 1 Eng . and Min . Jour . , Vol . 81 , p . 1247 ...
... present , cheaper to bring the ore to the fuel ( and to the people who buy and consume the iron ) , than to take the fuel to the ore and carry back most of the finished product . ore . 1 Eng . and Min . Jour . , Vol . 81 , p . 1247 ...
Stran 18
... present law which shall leave in it the present abnormal , irregular , indefinable , precarious and mischievous ' extra - lateral right . ' ' The causes of failure in mining are many and varied , varying somewhat with each locality and ...
... present law which shall leave in it the present abnormal , irregular , indefinable , precarious and mischievous ' extra - lateral right . ' ' The causes of failure in mining are many and varied , varying somewhat with each locality and ...
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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