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United States Bureau of Mines
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 ...
Eng. Applied to a vein cut vertically for some distance.
Industry:Mining
Eng. Applied to freestone in thin layers, mixed with mica.
Industry:Mining
Eng. Black slaty stone overlying coal seams, Somerset Coalfields. Also spelled werk.
Industry:Mining
Eng. Blue building stone, forming a bed of irregular anvil-shaped blocks.
Industry:Mining
Eng. Brattice constructed of a coarse, specially prepared canvas.
Industry:Mining
Eng. Cleaning coals by picking out refuse.
Industry:Mining
Eng. Cleaning the haulage road of coal that has fallen off the trams.
Industry:Mining
Eng. Coal having a fibrous or woody appearance.
Industry:Mining
Eng. Coal seams lying at a depth of 1,800 ft (549 m) or more below the surface.
Industry:Mining
Eng. Coal that has been prepared by screening or washing.
Industry:Mining
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