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 100
Stran iii
... side . In the chapter of the history of the precious metals a detailed account is given of the discovery of occurrences of metals and ores throughout the United States , the period covered extending from the earliest known records ...
... side . In the chapter of the history of the precious metals a detailed account is given of the discovery of occurrences of metals and ores throughout the United States , the period covered extending from the earliest known records ...
Stran 3
... side where a city rider would hardly dare to lead a horse . - " Rude was their system of justice ; but they had no probate courts or public administrators . They had no doctors or lawyers ; but then they died without expensive ...
... side where a city rider would hardly dare to lead a horse . - " Rude was their system of justice ; but they had no probate courts or public administrators . They had no doctors or lawyers ; but then they died without expensive ...
Stran 15
... side , and the average intelligence and aptness of the American miner has been such that he has gained a vast amount of practical information in this way . But , from time to time during the past several decades , the young min- ing ...
... side , and the average intelligence and aptness of the American miner has been such that he has gained a vast amount of practical information in this way . But , from time to time during the past several decades , the young min- ing ...
Stran 22
... Eusaio Cronologico Año MDXVI , fol . 2 . 2 Navarrette , Vol . 3 , pp . 147–153 . Relation d'Alvar Nuñez Cabeca de Vaca : Ternaux - Compans , Chap . IV , p . 29 . the dirt of the hillsides on the California side , 22 GOLD AND SILVER .
... Eusaio Cronologico Año MDXVI , fol . 2 . 2 Navarrette , Vol . 3 , pp . 147–153 . Relation d'Alvar Nuñez Cabeca de Vaca : Ternaux - Compans , Chap . IV , p . 29 . the dirt of the hillsides on the California side , 22 GOLD AND SILVER .
Stran 23
... side , just across from the newly established station.1 - The Cocopahs in lower California have had access to gold as far back as we have any record of them , which they have used as a medium of exchange in barter , also as ornaments ...
... side , just across from the newly established station.1 - The Cocopahs in lower California have had access to gold as far back as we have any record of them , which they have used as a medium of exchange in barter , also as ornaments ...
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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