- 行业: 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 ...
An odorless, flammable gas, CH<sub>4</sub>. Known in coal mines as combustible gases or gas.
Industry:Mining
An offset swivel coupling that supports the weight of the rods when whipstocking.
Industry:Mining
An offshore structure (such as a mole, wall, or jetty) that, by breaking the force of the waves, protects a harbor, anchorage, beach, or shore area.
Industry:Mining
An off-white, grayish, brown, yellow, or reddish brown rock composed of amorphous or microcrystalline aluminum oxides and oxyhydroxides, mainly gibbsite Al(OH)<sub>3</sub>, bayerite Al(OH)<sub>3</sub>, boehmite AlO(OH) , and diaspore AlO(OH) admixed with free silica, 266 silt, iron hydroxides, and esp. clay minerals; a highly aluminous "laterite." It is massive, pisolitic, earthy; occurs as weathered surface deposits after prolonged leaching of silica from aluminous rocks under tropical to subtropical weathering, also transported deposits. Bauxite is the chief ore of aluminum.
Industry:Mining
An oil produced from animal fats. This oil is an efficient lubricant for use on metalcutting tools.
Industry:Mining
An oil. Used in ore flotation as a selective collector and in rustproofing metal surfaces.
Industry:Mining
An old Cornish mining term referring to a collection of loose rock fragments usually discolored by oxidation, and indicating the presence of a mineral vein beneath the outcrop or gossan. Also spelled bryle; broyl.
Industry:Mining
