Mineral Resources of the United States, Parte1U.S. Government Printing Office, 1909 |
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Página 56
... following table shows the value for the calendar years 1907 and 1908 of the imports for consumption and of the exports of the mineral products included in this report as furnished by the Bureau of Statis- tics of the Department of ...
... following table shows the value for the calendar years 1907 and 1908 of the imports for consumption and of the exports of the mineral products included in this report as furnished by the Bureau of Statis- tics of the Department of ...
Página 64
... followed in order by the southeastern district and the northeastern district ; the Mississippi Valley and the western districts are of minor importance . The following table shows the relative output of ore in each of the commercial ...
... followed in order by the southeastern district and the northeastern district ; the Mississippi Valley and the western districts are of minor importance . The following table shows the relative output of ore in each of the commercial ...
Página 67
... following table shows the production of the different varieties of iron ores in the principal iron mining districts during 1908 : Production of iron ore in the United States , by mining districts and varieties , in 1908 , in long tons ...
... following table shows the production of the different varieties of iron ores in the principal iron mining districts during 1908 : Production of iron ore in the United States , by mining districts and varieties , in 1908 , in long tons ...
Página 71
... following table shows the tonnage of stock left at the mines on December 31 , 1907 and 1908 , in the various States : Stock of iron ore on hand at the mines December 31 , 1907 and 1908 , by States , in long tons . Alabama . Colorado ...
... following table shows the tonnage of stock left at the mines on December 31 , 1907 and 1908 , in the various States : Stock of iron ore on hand at the mines December 31 , 1907 and 1908 , by States , in long tons . Alabama . Colorado ...
Página 73
... following table an interesting comparison is made between the annual production of iron ore and of pig iron . Production of iron ore and pig iron in the United States , 1889-1908 , in long tons . Year . Iron ore mined . Year . Pig iron ...
... following table an interesting comparison is made between the annual production of iron ore and of pig iron . Production of iron ore and pig iron in the United States , 1889-1908 , in long tons . Year . Iron ore mined . Year . Pig iron ...
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10-stamp mill amounted Arizona average value bauxite bullion cadmium California carbonate Carolina chalcopyrite chromite clay Colorado concentrating mill containing copper Copper Company County in 1908 Creek crude cyanide cyanide plant decrease deep mines deposits district.-The dredge drift feet deep following table furnace Geological gold and silver Gold Mining Company granite hematite hübnerite hydraulic Idaho important increase lead and zinc limestone lode long tons magnetite manganese metals miles mineral products Mining and Milling Mountain Nevada North occur operated ounces of gold ounces of silver output oxide pig iron placer mines platinum pounds of copper pounds of lead production in 1908 production of gold pyrite quartz refined reported rock scheelite schists shipments short tons siliceous silver mills small quantity smelters smelting South steel sulphide Survey tonnage total value treated tungsten tunnel U. S. Geol United Utah veins Virginia wolframite yield zinc blende
Pasajes populares
Página 238 - ... 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 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...
Página 238 - ... 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 in case of ores that shall be removed to a bonded warehouse to be refined for...
Página 77 - 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 236 - States as shown by the report of the Bureau of Statistics of the Department of Commerce and Labor...
Página 132 - XLV. 463 pp. 1903. CLEMENTS, JM, SMYTH, HL, BAYLEY, WS, and VAN HISE, CR The Crystal Falls iron-bearing district of Michigan. Monograph XXXVI. 512 pp. 1899.
Página 695 - UDDEN, JA A sketch of the geology of the Chisos country, Brewster County, Texas.
Página 5 - The statistics of the imports and exports of minerals, which form an essential part of the volume, are obtained through the courtesy of the Chief of the Bureau of Statistics, Department of Commerce and Labor.
Página 83 - ... and shale, and is consequently of no possible value; and finally the upper bench itself becomes shaly and carries only a very low-grade ore. The Irondale seam is best developed on Red Mountain between Pilot Knob on the northeast and Lone Pine Gap on the southwest. Southwest of Lone Pine Gap the seam either consists of interbedded low-grade iron ore and shale or else its identity is completely lost. Its soft ore, now nearly all mined out either by surface trenches or slopes, is the best in the...
Página 220 - ... and rolling, but is suitable for copper castings, and a large part of it is put to that use. Lake copper excepted, a comparatively small percentage of the copper output carries such low values in precious metals that, together with the value added to the copper by electrolytic refining, these values will not more than pay for the electrolytic refining of the copper; consequently the output of casting copper is comparatively small.
Página 238 - ... 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...