Mineral Resources of the United States, Parte1U.S. Government Printing Office, 1913 |
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Página 210
... smelted direct to a manganiferous cast iron containing 1 to 4 per cent manganese , or those in which manganese equals ... smelting of lead and copper ores con- taining gold and silver , in which industry refractory mixtures fre- quently ...
... smelted direct to a manganiferous cast iron containing 1 to 4 per cent manganese , or those in which manganese equals ... smelting of lead and copper ores con- taining gold and silver , in which industry refractory mixtures fre- quently ...
Página 232
... smelters treating their own ores ; and ( 4 ) gold and silver in crude ore , con- centrates , old tailings , slags , etc. ( by assay value ) , shipped to cus- tom mills and smelters - all four of these classes of data being for material ...
... smelters treating their own ores ; and ( 4 ) gold and silver in crude ore , con- centrates , old tailings , slags , etc. ( by assay value ) , shipped to cus- tom mills and smelters - all four of these classes of data being for material ...
Página 233
... smelting , and refining losses must be considered . In the case of the precious metals the concentrating losses may be large and must be allowed for , but the smelting and refining losses are known to be very small and in ordinary ...
... smelting , and refining losses must be considered . In the case of the precious metals the concentrating losses may be large and must be allowed for , but the smelting and refining losses are known to be very small and in ordinary ...
Página 266
... smelting the richer ores , and the silver is then recovered in the refining of the copper or lead bullion . COPPER ORES . The production of silver from copper ores was 18,744,661 fine ounces in 1912 , against 16,759,638 ounces in 1911 ...
... smelting the richer ores , and the silver is then recovered in the refining of the copper or lead bullion . COPPER ORES . The production of silver from copper ores was 18,744,661 fine ounces in 1912 , against 16,759,638 ounces in 1911 ...
Página 270
... smelting . The total quantity shipped of this class of ore decreased from 6,016,425 short tons in 1910 to 5,588,771 tons in 1911 , but increased to 6,543,436 tons in 1912. The increases for 1912 were mainly in Alaska , Arizona ...
... smelting . The total quantity shipped of this class of ore decreased from 6,016,425 short tons in 1910 to 5,588,771 tons in 1911 , but increased to 6,543,436 tons in 1912. The increases for 1912 were mainly in Alaska , Arizona ...
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Términos y frases comunes
1912 were valued Alaska amounted Arizona barrels base bullion bullion California carbonate cement chalcocite clay products coal coke Colorado compared concentrating plant County crude decrease deposits district domestic exports feet furnaces galena gold and silver hematite Idaho imports for consumption included under Miscellaneous increased industry Lake Superior lead and zinc lead concentrates lime limestone lode long tons magnetite manganese manganiferous manufacture metals Mexico Michigan mill mineral products mineral waters mines Missouri Montana Nevada North Carolina operated ounces in 1911 ounces of silver outcrop oxide Pennsylvania pig iron Pima County placers pounds of copper principal production in 1912 production of copper production of gold production of lead pyrite Quan quantity quarry ranks recovered recovery refined reported rock sand and gravel shaft shipped short tons smelter smelting sold South sphalerite spiegeleisen stone sulphide sulphur Tennessee tity tonnage total output total production total value United States Geological Utah Wisconsin yielded zinc concentrates
Pasajes populares
Página 361 - ... 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 customs officers, and the import entries shall be liquidated thereon,...
Página 405 - 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. On the arrival of the ores at...
Página 363 - Lead dross, lead bullion or base bullion, lead in pigs and bars, lead! in any form not specially provided for in this...
Página 406 - 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 405 - That the works of manufacturers engaged in smelting or refining, or both, of ores and crude metals, may upon the giving of satisfactory bonds be designated as bonded smelting warehouses. Ores or crude metals may be removed from the vessel or other vehicle in which imported, or from a bonded warehouse, into a bonded smelting warehouse without the payment of duties thereon and there smelted or refined, or both, together with ores or crude metals...
Página 363 - Lead, acetate of, white, and nitrate of, 1J cents per pound; acetate of, brown, gray, or yellow, 1 cent per pound; all other lead compounds not specially provided for in this section, 20 per centum ad valorem.
Página 405 - Zinc in blocks or pigs and zinc dust, one and three-eighths cents per pound; In sheets, one and five-eighths cents per pound; In sheets coated or plated with nickel or other metal or solutions, one and three-fourths cents per pound ; old and worn-out, fit only to be remanufactured, one cent per pound.
Página 473 - In comparing the values of ore and metal it should be borne in mind that the value given for the ore is that actually received by the producer, whereas the value of the lead is calculated from the average daily quotations at New York.
Página 296 - No. 185, which may be obtained on application to the Director of the United States Geological Survey, Washington, DC...
Página 405 - And provided further, That the said metals so producible, or any portion thereof, may be withdrawn for domestic consumption, or transferred to a bonded customs warehouse, and withdrawn therefrom, and the several charges against the bonds canceled upon the payment of the duties chargeable against an equivalent...