Congressional Serial SetU.S. Government Printing Office, 1911 Reports, Documents, and Journals of the U.S. Senate and House of Representatives. |
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Página 161
... yield from some ores of uncertain origin which were smelted in Colorado plants . Includes " unapportioned . " TONNAGE AND YIELD OF COPPER ORES . COPPER - BEARING ores PRODUCED IN 1909 . The following tables show the tonnage and the yield ...
... yield from some ores of uncertain origin which were smelted in Colorado plants . Includes " unapportioned . " TONNAGE AND YIELD OF COPPER ORES . COPPER - BEARING ores PRODUCED IN 1909 . The following tables show the tonnage and the yield ...
Página 164
... YIELD . The 28,025,092 tons of copper , copper - lead , and copper - zinc ores mined in 1909 yielded 1,107,498,055 pounds of copper , or 1.98 per cent , as compared with 2.08 per cent in 1908. If the Michigan output is excluded , the yield ...
... YIELD . The 28,025,092 tons of copper , copper - lead , and copper - zinc ores mined in 1909 yielded 1,107,498,055 pounds of copper , or 1.98 per cent , as compared with 2.08 per cent in 1908. If the Michigan output is excluded , the yield ...
Página 165
... yield , exclusive of Michigan ores that did not yield silver , was 0.0166 ounce of gold and 1.075 ounces of silver per ton , or a combined precious - metal value of 91 cents per ton of ore . Exclusive of the Michigan ores that did not ...
... yield , exclusive of Michigan ores that did not yield silver , was 0.0166 ounce of gold and 1.075 ounces of silver per ton , or a combined precious - metal value of 91 cents per ton of ore . Exclusive of the Michigan ores that did not ...
Página 166
... yield of all ores treated being 2.29 per cent . About 73.5 per cent of the copper was derived from concentrating ... yield of 42.49 pounds per ton , as compared with a yield of 45.5 pounds in 1908 . from The smelter of the Shannon Copper ...
... yield of all ores treated being 2.29 per cent . About 73.5 per cent of the copper was derived from concentrating ... yield of 42.49 pounds per ton , as compared with a yield of 45.5 pounds in 1908 . from The smelter of the Shannon Copper ...
Página 169
... yield of ore milled by principal Michigan companies in 1908 and 1909 . Company . 1908 . 1909 . Tonnage . Yield per ton . Tonnage . Yield per ton . Short tons . Pounds . Allouez . Baltic . Centennial . Champion . Franklin . Isia Royale ...
... yield of ore milled by principal Michigan companies in 1908 and 1909 . Company . 1908 . 1909 . Tonnage . Yield per ton . Tonnage . Yield per ton . Short tons . Pounds . Allouez . Baltic . Centennial . Champion . Franklin . Isia Royale ...
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Términos y frases comunes
Alaska antimony Arizona assay average value base bullion bauxite California Carolina cents per pound Colorado compared concentration mill consumption containing Copper Company copper-lead County in 1909 Creek crude cyanide decrease deep mines deposits district in 1909 district.-The domestic dredges exports feet fine ounces foreign furnaces Geological Survey gold and silver gold production Idaho imports increase Lake Superior lead concentrates long tons manganese manganiferous matte Mexico Michigan Mineral mines produced Mining Company Missouri Montana Nevada Nye County operated ounces of gold ounces of silver oxide pig iron placer gold placer mines plant pounds in 1908 pounds of copper pounds of lead produced in 1909 production of gold Quan Quantity quartz recovered reported shaft shipments shipped to smelters short tons siliceous silver production smelters smelting sold or treated sphalerite spiegeleisen tity tonnage tons of concentrates total production total value U. S. Geol Utah Virginia yield zinc oxide
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Página 59 - Newfoundland into this country during the year 1907; whilst, according to the statistics published by the Bureau of Statistics of the Department of Commerce...
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 501 - ... shafts and by drilling. The ore deposits occur in the Galena dolomite and in the upper part of the Platteville limestone, both of Ordovician age. The ores are galena, smithsonite, and sphalerite, though the two latter are much less common now than formerly, when the deposits worked were mostly shallow and above water level. In early years the galena ores only were mined and the ore was taken from shallow pockets in quantities ranging from a few tons to several thousand.
Página 599 - ... foreign countries to the United States furnished by consuls, and the annual report laid before Congress entitled "Commercial Relations of the United States." Prior to July 1, 1903, these reports were published by the Bureau of Foreign Commerce of the Department of State. This duty was transferred to the Bureau of Statistics of the Department of Commerce and Labor by the act of February 14, 1903, creating that Department. STEAMBOAT-INSPECTION SERVICE. The Steamboat-Inspection Service is charged...
Página 195 - ... 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, designated by the Secretary of the Treasury, who shall make a proper assay of the sample, and report the result to the proper...
Página 191 - ... which are expressed in the same terms as those in which they were imported. The lead imported for consumption may be actually used in this country, or it may be manufactured into articles which are exported, in which case the manufacturer is entitled to the benefit of a drawback of 99 per cent of the duties paid. In the table below, showing foreign...
Página 503 - The lead and zinc deposits of Iowa extend along Mississippi River for nearly 80 miles in Dubuque, Clayton, and Allamakee counties. They are found in the Galena dolomite, of Ordovician age. In early days the Dubuque mines were the most important source of lead in the United States, and in later years the mines, especially those in the vicinity of Durango, yielded considerable quantities of zinc carbonate ore.
Página 195 - ... merchandise to properly equipped sampling or smelting establishments, whether designated as 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...
Página 556 - IMPORTS AND EXPORTS. • According to returns from the Bureau of Statistics, of the Department of Commerce and Labor, the imports of quicksilver into the United States in 1909 remained at practically the insignificant figures of 1908.