Mineral Resources of the United States, Parte1U.S. Government Printing Office, 1912 |
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Página 43
... opened in 1884 , as was the Vermillion range in Minnesota . The Mesabi range in Minnesota , now the greatest iron producer of the world , was opened in 1892 , but Michigan continued to lead in the production of ore until the first year ...
... opened in 1884 , as was the Vermillion range in Minnesota . The Mesabi range in Minnesota , now the greatest iron producer of the world , was opened in 1892 , but Michigan continued to lead in the production of ore until the first year ...
Página 45
... opened in 1892 with a production in that year of less than 30,000 tons ; by 1894 it had reached nearly 2,000,000 tons annually , and in 1902 , when 10 years of age , it produced over 13,000,000 tons , or nearly one - half of the total ...
... opened in 1892 with a production in that year of less than 30,000 tons ; by 1894 it had reached nearly 2,000,000 tons annually , and in 1902 , when 10 years of age , it produced over 13,000,000 tons , or nearly one - half of the total ...
Página 83
... opened in 1905 , and development of properties in Russell County have been active during the last two or three years . The output of 1911 was the largest ever obtained . The production of pig iron in Virginia , the value of which is not ...
... opened in 1905 , and development of properties in Russell County have been active during the last two or three years . The output of 1911 was the largest ever obtained . The production of pig iron in Virginia , the value of which is not ...
Página 292
... opened , while much territory remains to be prospected . Moreover , it is claimed that a large tonnage of the mill tailings pro- duced when milling methods were less efficient than at present can be re - treated at a profit . Perhaps ...
... opened , while much territory remains to be prospected . Moreover , it is claimed that a large tonnage of the mill tailings pro- duced when milling methods were less efficient than at present can be re - treated at a profit . Perhaps ...
Página 299
... opened . The ores of the district according to Ransome are of three types of occurrence : ( 1 ) Irregular bodies formed by metasomatic replacement of limestone and geneti- cally associated with metamorphism of a kind usually attributed ...
... opened . The ores of the district according to Ransome are of three types of occurrence : ( 1 ) Irregular bodies formed by metasomatic replacement of limestone and geneti- cally associated with metamorphism of a kind usually attributed ...
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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...