- Industry: Mining
- Number of terms: 33118
- Number of blossaries: 0
- Company Profile:
The U.S. Bureau of Mines (USBM) was the primary United States Government agency conducting scientific research and disseminating information on the extraction, processing, use, and conservation of mineral resources.
Founded on May 16, 1910, through the Organic Act (Public Law 179), USBM's missions ...
Colorless, tasteless, odorless, relatively inert element. Symbol, N. Nitrogen makes up 78% of the air, by volume. From this inexhaustible source it can be obtained by liquefaction and fractional distillation. Used in the production of ammonia and nitric acid, as a blanketing medium in the electronics industry, as a refrigerant, in annealing stainless steel, in drugs, and for forcing crude oil from oil wells.
Industry:Mining
Colorless, white, or yellowish; crystalline; ZnSO<sub>4</sub>.H<sub>2</sub>O ; molecular weight, 115.45; sp gr, 3.98; melting point, 1,049 degrees C; insoluble in water; and soluble in acids. Used as a pigment and in white glass and in opaque glass.
Industry:Mining
Colorless; needles; ZnSO<sub>4</sub>.7H<sub>2</sub>O ; odorless; astringent, metallic taste; effloresces in air; sp gr, 1.9661; melting point, 50 degrees C if heated rapidly; soluble in water and in glycerol; insoluble in alcohol; and its solutions are acid to litmus. Used in preparing zinc chemicals. Orthorhombic; molecular weight, 287.54; sp gr, 1.957 (at 25 degrees C, referred to water at 4 degrees C) and ranges from 1.9 to 2.1; Mohs hardness, 2.0 to 2.5; melting point, 100 degrees C; loses 7H<sub>2</sub>O on heating to 280 degrees C; and slightly soluble in alcohol and in glycerol. Occurs as the mineral goslarite, which is white or yellowish; formed by the oxidation of sphalerite (ZnS) in damp locations, esp. in the presence of iron sulfides.
Industry:Mining
Colorless; odorless; very toxic gas; CO; burns to carbon dioxide with a blue flame. Formed as a product of the incomplete combustion of carbon (such as in water gas and producer gas; in the exhaust gases from internal-combustion engines, such as automotive; and in the gases from the detonation of explosives). Used chiefly in the synthesis of carbonyls (such as nickel carbonyl in the refining of nickel), phosgene, and many organic compounds (such as hydrocarbons for fuels, methanol and higher alcohols, aldehydes, and formates). This gas is formed during mine fires and after explosions.
Industry:Mining
Colorless; stable; low-boiling; heavy; mobile; toxic; liquid; CHCl:CCl<sub>2</sub>.
Industry:Mining
Colors shown to the eye by incandescent bodies at different temperatures.
Industry:Mining
Combustible material that has only limited uses owing to undesirable characteristics (for example, ash content or size).
Industry:Mining
