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 30
... discovery of gold and silver in the Santa Rita mountains : " In the year 1769 , a region of virgin silver was discovered on the frontier of the Apaches , a tribe exceedingly war - like and brave , at the place called Arizona , on a ...
... discovery of gold and silver in the Santa Rita mountains : " In the year 1769 , a region of virgin silver was discovered on the frontier of the Apaches , a tribe exceedingly war - like and brave , at the place called Arizona , on a ...
Stran 31
... discovered in the archives at Tucson in 1755 further mention is made of Santa Rita , which also serves to corrob- orate the above : " In the vicinity of Aribac ( or Arivaca ) , about seven leagues away , are , they say , many mines of ...
... discovered in the archives at Tucson in 1755 further mention is made of Santa Rita , which also serves to corrob- orate the above : " In the vicinity of Aribac ( or Arivaca ) , about seven leagues away , are , they say , many mines of ...
Stran 32
... discovery of the San Franciscoquito placers was , as stated above , in 1838 , but given by other authorities as 1841 and 1842 , 3 was made by Francisco Lopez while searching for strayed cattle . He discovered grains of gold in the earth ...
... discovery of the San Franciscoquito placers was , as stated above , in 1838 , but given by other authorities as 1841 and 1842 , 3 was made by Francisco Lopez while searching for strayed cattle . He discovered grains of gold in the earth ...
Stran 33
... discovery of gold at Sutter's Mill and the signing of the treaty . It is claimed that the knowledge of the discovery was not known to the Mexicans , while the Amer- ican officials affected ignorance . The following extract from an ...
... discovery of gold at Sutter's Mill and the signing of the treaty . It is claimed that the knowledge of the discovery was not known to the Mexicans , while the Amer- ican officials affected ignorance . The following extract from an ...
Stran 34
... discovered Dease Lake , crossed to the head of the Stikine , which later received the name of Frances River . In 1838 , Robert Campbell established a post on Dease Lake , which was later abandoned . About this time the Hudson Bay ...
... discovered Dease Lake , crossed to the head of the Stikine , which later received the name of Frances River . In 1838 , Robert Campbell established a post on Dease Lake , which was later abandoned . About this time the Hudson Bay ...
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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