Mineral Resources of the United States, Parte2,Tema 1U.S. Government Printing Office, 1914 |
Dentro del libro
Resultados 1-5 de 74
Página 3
... thickness and length . These masses cut the country rock in various ways , either conformably with its bedding or at various angles to it . Some pegmatites are conformable with the bedding of the inclosing gneisses or schists through ...
... thickness and length . These masses cut the country rock in various ways , either conformably with its bedding or at various angles to it . Some pegmatites are conformable with the bedding of the inclosing gneisses or schists through ...
Página 4
... thickness . The rough edges are cut off these plates by knives held at an angle to the cleavage , and the mica is graded for size and quality . The graded mica is then ready for further splitting and trimming into patterns desired by ...
... thickness . The rough edges are cut off these plates by knives held at an angle to the cleavage , and the mica is graded for size and quality . The graded mica is then ready for further splitting and trimming into patterns desired by ...
Página 28
... thickness of debris is not exposed in the open cut , but it can scarcely exceed 25 feet . The material as mined probably contains from 15 to 25 per cent of sulphur . A second pit lies about 800 feet west of the first . It is 85 feet ...
... thickness of debris is not exposed in the open cut , but it can scarcely exceed 25 feet . The material as mined probably contains from 15 to 25 per cent of sulphur . A second pit lies about 800 feet west of the first . It is 85 feet ...
Página 39
... thickness , but in general , they conform to the structure of the inclosing rock . During the year 1913 two pyrite mines were worked in this region . One of these was operated by the St. Lawrence Pyrites Co. , at Stella- ville , on a ...
... thickness , but in general , they conform to the structure of the inclosing rock . During the year 1913 two pyrite mines were worked in this region . One of these was operated by the St. Lawrence Pyrites Co. , at Stella- ville , on a ...
Página 72
... form of slabs from 1 inch to 3 inches or more thick , and is sold at prices ranging from 4 cents to 50 cents per square foot , according to the size , thickness , and quality of the slate 72 MINERAL RESOURCES , 1913 - PART II .
... form of slabs from 1 inch to 3 inches or more thick , and is sold at prices ranging from 4 cents to 50 cents per square foot , according to the size , thickness , and quality of the slate 72 MINERAL RESOURCES , 1913 - PART II .
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Términos y frases comunes
alunite asbestos average price barrels barytes beds biotite borax buildings California carbon Carolina cent chemical chloride clay products coal coke common brick compared with 1912 County crude crystalline decrease district exports feet feldspar flakes following table fuller's earth furnace gallons Geological Survey GEORGE OTIS SMITH Georgia gneiss grades granite graphite graphitic schist gypsum Illinois imports inches included increase industry iron Jersey Jour kelp Kentucky Lake lead lime limestone long tons magnesite manufacture marketed production Maryland material mica miles mill Mineral Resources mines North occurs Ohio operations output ovens oxide paint peat pegmatite Pennsylvania phosphate pigments plants Portland cement potash potash salts potassium pounds production in 1913 pyrite Quan quantity and value quarry quartz rock sand sand-lime brick schist shipments short tons showed silica slate sold South sulphate Survey Bull Tennessee tile tity total value U. S. Geol United Utah veins ware West Virginia York zinc
Pasajes populares
Página 569 - ... charms, vases, statues, statuettes, mugs, cups, steins, lamps, and all other articles composed wholly or in chief value of such ware...
Página 66 - 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 569 - ... not painted, colored, tinted, stained, enameled, gilded, printed, or ornamented or decorated in any manner; and manufactures in chief value of such ware not specially provided for in this section, fifty-five per centum ad valorem.
Página 66 - ... 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 of the Treasury is authorized to make all necessary regulations to enforce the provisions of this paragraph.
Página 65 - Blues, such as Berlin. Prussian, Chinese, and all others, containing ferrocyanide of iron, in pulp, dry or ground in or mixed with oil or water, eight cents per pound.
Página 543 - The government publications, except those to which a price is affixed, can be obtained free by applying to the Director, United States Geological Survey, Washington, DC The priced publications may be purchased from the Superintendent of Documents, Government Printing Office, Washington, DC ADAMS, GI, and others.
Página 337 - The filter sand shall be clean river, beach, or bank sand, with either sharp or rounded grains. It shall be entirely free from clay, dust, or organic impurities, and shall, if necessary, be washed to remove such materials from it. The grains shall all of them be of hard material, which will not disintegrate, and shall be of the following diameters : Not more than...
Página 66 - Lead dross, lead bullion or base bullion, lead in pigs and bars, lead! in any form not specially provided for in this section, old refuse lead run into blocks and bars, and old scrap lead fit only to be remanufactured ; all the foregoing, two and one-eighth cents per pound ; lead in sheets, pipe, shot, glaziers' lead and lead wire, two and three-eighths cents per pound.
Página 65 - Blue pigments and all blues containing iron ferrocyanide or iron ferricyanide, in pulp, dry, or ground in or mixed with oil or water...
Página 66 - All paints, colors, pigments, lakes, crayons, smalts and frostings, whether crude or dry or mixed, or ground with water or oil or •with solutions other than oil, not otherwise specially provided for in this Act, thirty per centum ad valorem ; all paints, colors and pigments, commonly known as artists' paints or colors, whether in tubes, pans, cakes or other forms, thirty per centum ad valorem.