Mineral Resources of the United States, Parte1U.S. Government Printing Office, 1912 |
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Página 228
... yielded $ 17,907,034 of the gold , or 94 per cent of the total gold output ; nearly 2 per cent came from the placers , and nearly 2 per cent from lead ores , the remainder of the gold pro- duction being derived from copper , zinc , and ...
... yielded $ 17,907,034 of the gold , or 94 per cent of the total gold output ; nearly 2 per cent came from the placers , and nearly 2 per cent from lead ores , the remainder of the gold pro- duction being derived from copper , zinc , and ...
Página 247
... yielded 0.3 per cent of the total silver output in 1911. In gold and silver mills 15.67 per cent was recovered - 1.54 per cent by amalgamation and 14.13 per cent by cyanidation . The remainder of the silver production , 84.03 per cent ...
... yielded 0.3 per cent of the total silver output in 1911. In gold and silver mills 15.67 per cent was recovered - 1.54 per cent by amalgamation and 14.13 per cent by cyanidation . The remainder of the silver production , 84.03 per cent ...
Página 254
... yielded 181,206 fine ounces of gold in 1911 , of which 160,937 ounces were recovered in Colorado , 20,006 ounces in California , and 263 ounces in South Carolina . According to the percentages of the total output from all sources of ...
... yielded 181,206 fine ounces of gold in 1911 , of which 160,937 ounces were recovered in Colorado , 20,006 ounces in California , and 263 ounces in South Carolina . According to the percentages of the total output from all sources of ...
Página 258
... yielded approximately 34 per cent of the total output of the country , and they yielded about 23 per cent of the 1911 output . Paleozoic era . The deposits of this era are confined to the Appa- lachian region . They were formerly ...
... yielded approximately 34 per cent of the total output of the country , and they yielded about 23 per cent of the 1911 output . Paleozoic era . The deposits of this era are confined to the Appa- lachian region . They were formerly ...
Página 259
... yielded consider- able copper . If the age assigned to the deposits included in this period is correct , ores of this age have yielded about 46.5 per cent of the total output of the country , and they produced about 45 per cent of the ...
... yielded consider- able copper . If the age assigned to the deposits included in this period is correct , ores of this age have yielded about 46.5 per cent of the total output of the country , and they produced about 45 per cent of the ...
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Términos y frases comunes
aggregated Amalgamation amounted Arizona average value base bullion bullion California carbonate centration clay products coal Colorado compared concen concentrating plant concentration mill containing copper-lead Creek crude Crusher cyanide plant decrease deep mines deposits depth district.-The dredges drilling dry or siliceous exports feet deep feet of drifts following table furnaces galena Geological gold and silver Grant County gravel Huntington mill Idaho important increase jigs Lake Superior lead and zinc lead concentrates lead-zinc lessees lode long tons magnetic manganese Mexico Michigan mineral production Missouri Montana Nevada Nye County old tailings operated ounces of gold ounces of silver oxidized pig iron placer mines pounds of copper pounds of lead principal production in 1911 production of gold pyrite recovered refined reported rock shipments shipped to smelters short tons silver mills smelters smelting Socorro County sphalerite sulphide Survey tion tonnage total value U. S. Geol United Utah vertical shaft yielded zinc concentrates
Pasajes populares
Página 213 - I refer you to the Annual Report of the Director of the Mint for the fiscal year ended June 30.
Página 340 - Provided further, That all labor performed and services rendered pursuant to this section shall be under the supervision of an officer of the customs, to be appointed by the Secretary of the Treasury...
Página 339 - On the arrival of the ores at such establishments they shall be sampled according to commercial methods under the supervision of Government officers, who shall be stationed at such establishments and who shall submit the samples thus obtained to a Government assayer, designated by the Secretary of the Treasury, who shall make a proper assay of the sample, and report the result to the proper...
Página 383 - ... bonded warehouses or otherwise. On the arrival of the ores at such establishments they shall be sampled according to commercial methods under the supervision of Government officers, who shall be stationed at such establishments, and who shall submit the samples thus obtained to a Government assayer...
Página 384 - ... methods under the supervision of government officers, who shall be stationed at such establishments, and who shall submit the samples thus obtained to a government assayer, designated by the Secretary of the Treasury, who shall make a proper assay of the sample and report the result to the proper customs officers, and the import entries shall be liquidated thereon, except in case of ores that shall be removed to a bonded warehouse to be refined for exportation as provided by law. And the Secretary...
Página 172 - Report on the geology and mineral resources of the central mineral region of Texas: Second Ann.
Página 353 - States as shown by the report of the Bureau of Statistics of the Department of Commerce and Labor...
Página 148 - The next two pages, the southeast quarter of the northeast quarter and the southwest quarter of the northeast quarter, and so on through the other quarters of the section.
Página 397 - SCHRADER, FC, Mineral deposits of the Cerbat Range, Black Mountains, and Grand Wash Cliffs, Mohave County, Ariz.: Bull.
Página 396 - The following publications, except those to which a price is affixed, can be obtained free by applying to the Director...