Mineral Resources of the United States, Parte1U.S. Government Printing Office, 1911 |
Dentro del libro
Resultados 1-5 de 68
Página 148
... amalgamation and cyanidation . Rich ores are usually smelted and the silver is then recovered by refining the lead or copper which collects it in the furnace . Copper ores . - Mine production of silver from copper ores in 1909 was ...
... amalgamation and cyanidation . Rich ores are usually smelted and the silver is then recovered by refining the lead or copper which collects it in the furnace . Copper ores . - Mine production of silver from copper ores in 1909 was ...
Página 228
... amalgamate , but sea water was substituted in the batteries and a high extraction was obtained . Ketchikan mining district . - Near Hollis , on Twelvemile Arm , a 5 - stamp mill , built so that an additional battery of 5 stamps can ...
... amalgamate , but sea water was substituted in the batteries and a high extraction was obtained . Ketchikan mining district . - Near Hollis , on Twelvemile Arm , a 5 - stamp mill , built so that an additional battery of 5 stamps can ...
Página 235
... amalgamation extracted 67,769.45 fine ounces from 216,910 tons of ore , averaging $ 6.46 per ton . Some of the mills , especially those in Yavapai County , where cyanide and amalgamation methods are in use , are also equipped to save ...
... amalgamation extracted 67,769.45 fine ounces from 216,910 tons of ore , averaging $ 6.46 per ton . Some of the mills , especially those in Yavapai County , where cyanide and amalgamation methods are in use , are also equipped to save ...
Página 236
... amalgamation and cyanide mills aggregated 216,910 tons and yielded 258,029 ounces of silver , or an average of 1.19 ounces per ton . At concentration mills 248,969 tons of concentrates were made , containing 135,657 ounces of silver ...
... amalgamation and cyanide mills aggregated 216,910 tons and yielded 258,029 ounces of silver , or an average of 1.19 ounces per ton . At concentration mills 248,969 tons of concentrates were made , containing 135,657 ounces of silver ...
Página 245
... amalgamation mill ore was treated which yielded gold and silver bullion , making up the remainder of the output of the county . A large part of the crude ore produced was treated at the Old Dominion smelter at Globe and a small part of ...
... amalgamation mill ore was treated which yielded gold and silver bullion , making up the remainder of the output of the county . A large part of the crude ore produced was treated at the Old Dominion smelter at Globe and a small part of ...
Otras ediciones - Ver todas
Términos y frases comunes
aggregated amounted antimony Arizona associated metals average value base bullion bauxite California cents per pound Colorado compared concentration mill consumption containing Copper Company copper-lead County in 1909 Creek cyanide decrease deep mines deposits district in 1909 district.-The dredges exports feet fine ounces fluorspar Geological Survey gold and silver gold production Idaho imports increase Lake Superior lead and zinc lessees long tons manganese miles Mineral mines produced Mining Company Montana Nevada Nye County operated ounces of gold ounces of silver oxide pig iron placer gold placer mines plant pounds of copper pounds of lead produced in 1909 producing mines production of gold pyrite Quan Quantity quartz quicksilver recovered refined reported rock sand-lime brick shaft shipments shipped to smelters short tons siliceous silver mills silver production smelters smelting Socorro County sold or treated sphalerite spiegeleisen tity tonnage tons of concentrates total value U. S. Geol Utah yield
Pasajes populares
Página 195 - Provided, That on all importations of lead-bearing ores the duties shall be estimated at the port of entry, and a bond given in double the amount of such estimated duties for the transportation of the ores by common carriers bonded for the transportation of appraised or unappraised merchandise to properly equipped sampling or smelting establishments, whether designated as bonded warehouses or otherwise.
Página 195 - ... 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, 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...
Página 122 - DISTRIBUTION, BY PRODUCING STATES AND TERRITORIES, OF THE PRODUCT OF GOLD AND SILVER IN THE UNITED STATES FOR THE CALENDAR YEAR, 1905.
Página 215 - Minerals, crude, or not advanced in value or condition by refining or grinding, or by other process of manufacture, not specially provided for in this Act.
Página 196 - 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, and at the expense of the manufacturer...
Página 566 - That when wheels for railway purposes, or parts thereof, of iron or steel, are imported with iron or steel axles fitted in them, the wheels and axles together shall be dutiable at the same rate as is provided for the wheels when imported separately. 172. Aluminum, aluminum scrap, and alloys of any kind in which, aluminum is the component material of chief value...
Página 500 - The completion of the White River branch of the St. Louis, Iron Mountain and Southern Railroad and of the St.
Página 203 - Statistics of the recovery of secondary zinc were collected from all the important secondary smelters and refiners. The statistics of domestic consumption are taken in part from the smelter returns and in part from the records of the Bureau of Statistics of the Department of Commerce and Labor, and the tables for foreign production and consumption were compiled from the sources indicated. i In Mineral Resources for 1906, p. 461, zinc derived from ore was called "primary" spelter to distinguish it...
Página 42 - Mr. James M. Swank, general manager of the American Iron and Steel Association, corroborates the testimony of Mr.
Página 196 - ... metals of home or foreign production: Provided, That the bonds shall be charged with...