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 |
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Stran iii
... resulting therefrom , is necessarily of prime importance in a work of this character , its treatment has been broad and it has been approached from practically every side . In the chapter of the history of the precious metals a detailed ...
... resulting therefrom , is necessarily of prime importance in a work of this character , its treatment has been broad and it has been approached from practically every side . In the chapter of the history of the precious metals a detailed ...
Stran 2
... result . His achievements are seldom adequately rewarded , much less his importance as a civilizing agency recognized . California , practically unknown in '48 , is now in the front rank of the States of the Union both in population and ...
... result . His achievements are seldom adequately rewarded , much less his importance as a civilizing agency recognized . California , practically unknown in '48 , is now in the front rank of the States of the Union both in population and ...
Stran 3
... result of the gold excitement , there were many undesirable individuals , many , in fact , who were wanted for misdemeanors in the States and other lands . It is not strange then that lawlessness , crime , and a generally low standard ...
... result of the gold excitement , there were many undesirable individuals , many , in fact , who were wanted for misdemeanors in the States and other lands . It is not strange then that lawlessness , crime , and a generally low standard ...
Stran 8
... results have been in keeping with and dependent on the growth of the railroads . The early railroads were laid with ' strap rails ; ' T - rails were not rolled in this country till 1844 . Pennsylvania early held the chief place in ...
... results have been in keeping with and dependent on the growth of the railroads . The early railroads were laid with ' strap rails ; ' T - rails were not rolled in this country till 1844 . Pennsylvania early held the chief place in ...
Stran 9
... result , the production rose rapidly to three million pounds of copper per month . " Dr. Douglas commented also on the wasteful consumption of our supplies incidental to our great railroad development . He said : " But vast as our ...
... result , the production rose rapidly to three million pounds of copper per month . " Dr. Douglas commented also on the wasteful consumption of our supplies incidental to our great railroad development . He said : " But vast as our ...
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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