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 27
... Rept . , pt . 3 , p . 254 . 2 From Harris's Collection of Voyages and Travels , Vol . 2 , 1705 , Appendix , p . 19 , including references to the Spanish mines . • Notes on Virginia , 1787 . mining camps or realitos . The southwestern ...
... Rept . , pt . 3 , p . 254 . 2 From Harris's Collection of Voyages and Travels , Vol . 2 , 1705 , Appendix , p . 19 , including references to the Spanish mines . • Notes on Virginia , 1787 . mining camps or realitos . The southwestern ...
Stran 34
... of $ 2000 . This turned the movement of furs down 1 Min . and Sci . Press , Vol . 26 , p . 402 . ' U. S. G. S. 18 Rept . , pt . 3 , p . 103 . the Stikine River . Frances Lake was discovered by Campbell 34 GOLD AND SILVER .
... of $ 2000 . This turned the movement of furs down 1 Min . and Sci . Press , Vol . 26 , p . 402 . ' U. S. G. S. 18 Rept . , pt . 3 , p . 103 . the Stikine River . Frances Lake was discovered by Campbell 34 GOLD AND SILVER .
Stran 39
... Rept . on the Geol . and Topography of a Portion of the Lake Superior Land District in the State of Michigan , Doc . No. 69 , 1850 , p . 179 . 3 Eng . and Min . Jour . , Vol . 20 , p . 575 . Messrs . Foster and Whitney make the ...
... Rept . on the Geol . and Topography of a Portion of the Lake Superior Land District in the State of Michigan , Doc . No. 69 , 1850 , p . 179 . 3 Eng . and Min . Jour . , Vol . 20 , p . 575 . Messrs . Foster and Whitney make the ...
Stran 41
... 25 , p . 679 . 2 U. S. G. S. 20 Annual Rept . , pt . 6 , p . 112 . Second Biennial Report on the Geology of Alabama , p . 70 , Montgomery , 1858 . connection with the matter , except that at such and DISCOVERY OF GOLD AND SILVER . 41.
... 25 , p . 679 . 2 U. S. G. S. 20 Annual Rept . , pt . 6 , p . 112 . Second Biennial Report on the Geology of Alabama , p . 70 , Montgomery , 1858 . connection with the matter , except that at such and DISCOVERY OF GOLD AND SILVER . 41.
Stran 44
... , when washed , give several colors . " 66 1 U. S. G. S. , 18 Annual Rept . , pt . 3 , p . 111 . 2 Along Alaska's Great River , p . 190 . Bench gravels containing gold were found at Von Wilczeks Valley 44 GOLD AND SILVER .
... , when washed , give several colors . " 66 1 U. S. G. S. , 18 Annual Rept . , pt . 3 , p . 111 . 2 Along Alaska's Great River , p . 190 . Bench gravels containing gold were found at Von Wilczeks Valley 44 GOLD AND SILVER .
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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