- 行业: Mining
- Number of terms: 33118
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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 ...
A name used for impure red ferric oxide pigments and polishing powders, usually produced by heating iron sulfate containing calcium sulfate, lime, or other inert filler. Also sometimes applied more generally to other impure oxides of red or yellow color.
Industry:Mining
A narrow and low passage driven in the coal where miners take refuge while coal is being blasted. Chiefly in mines where seams pitch sharply.
Industry:Mining
A narrow band of crushed rock or clayey material found along a fault zone or vein of ore.
Industry:Mining
A narrow band of crushed rock or clayey material found along a fault zone or vein of ore.
Industry:Mining
A narrow band of crushed rock or clayey material found along a fault zone or vein of ore.
Industry:Mining
A narrow band of crushed rock or clayey material found along a fault zone or vein of ore.
Industry:Mining
A narrow band of crushed rock or clayey material found along a fault zone or vein of ore.
Industry:Mining