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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Zadetki 1–5 od 99
Stran 2
... 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 wealth . It is true that a considerable emigration from the ...
... 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 wealth . It is true that a considerable emigration from the ...
Stran 10
... less money , which will be far from an evil , for it may oblige us to replace some of our pelf with humility and meek- ness of spirit . " As our resources fail , however , we shall not lack for raw mate- rial , as long as the world's ...
... less money , which will be far from an evil , for it may oblige us to replace some of our pelf with humility and meek- ness of spirit . " As our resources fail , however , we shall not lack for raw mate- rial , as long as the world's ...
Stran 26
... less arbitrary division in time between what may be considered legendary and early history as the begin- ning , and certain dates made prominent by the occurrence of some important event , as the close of the early history and the ...
... less arbitrary division in time between what may be considered legendary and early history as the begin- ning , and certain dates made prominent by the occurrence of some important event , as the close of the early history and the ...
Stran 33
... less isolated portion of her territory is evident and was probably realized by the American officials , for there seems to have been a decided tendency toward unusually prompt action in the diplomatic proceedings which led to the ...
... less isolated portion of her territory is evident and was probably realized by the American officials , for there seems to have been a decided tendency toward unusually prompt action in the diplomatic proceedings which led to the ...
Stran 39
... less , in spite of this failure , silver would seem to have existed , and possibly in paying quantities , for the Indians were constantly bring- ing for barter native silver , and in some considerable quantities , and , what was more ...
... less , in spite of this failure , silver would seem to have existed , and possibly in paying quantities , for the Indians were constantly bring- ing for barter native silver , and in some considerable quantities , and , what was more ...
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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