Mineral Resources of the United States, Parte1U.S. Government Printing Office, 1912 |
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Página 146
... capacity for which is acquired only by wide experience and pains- taking observation . ** * * A very interesting and practical discussion of exploration and pros- pecting for iron ore and of the magnetism of rocks and the use of the ...
... capacity for which is acquired only by wide experience and pains- taking observation . ** * * A very interesting and practical discussion of exploration and pros- pecting for iron ore and of the magnetism of rocks and the use of the ...
Página 155
... capacity of abandoned furnaces which are still in a state of physical but not commercial existence is not considered . Four new blast furnaces , with a total annual capacity of 565,000 tons , were added during 1911 , as compared with 13 ...
... capacity of abandoned furnaces which are still in a state of physical but not commercial existence is not considered . Four new blast furnaces , with a total annual capacity of 565,000 tons , were added during 1911 , as compared with 13 ...
Página 156
... capacity during 1911 was increased by 150,000 tons ( the capacity of the two new active furnaces for the half year during which they were in opera- tion ) , which made a total of 32,987,000 tons , the production of pig iron and other ...
... capacity during 1911 was increased by 150,000 tons ( the capacity of the two new active furnaces for the half year during which they were in opera- tion ) , which made a total of 32,987,000 tons , the production of pig iron and other ...
Página 163
... capacity , and was de- signed to run with 4,000 amperes at 35 volts , single - phase current . This furnace differed considerably in design from the first one erected . It was started early in 1908 and made an experimental run for 46 ...
... capacity , and was de- signed to run with 4,000 amperes at 35 volts , single - phase current . This furnace differed considerably in design from the first one erected . It was started early in 1908 and made an experimental run for 46 ...
Página 205
... capacity of about 2,613 tons of ore averaging approxi- mately 53 per cent metallic manganese in the dry state ; 1,460 tons of refuse , con- taining 30 per cent mineral to waste in washing the first - named quantity of ore . [ A list of ...
... capacity of about 2,613 tons of ore averaging approxi- mately 53 per cent metallic manganese in the dry state ; 1,460 tons of refuse , con- taining 30 per cent mineral to waste in washing the first - named quantity of ore . [ A list of ...
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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...