- 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 ...
Staff. A contrivance used in coal mining to prevent cars from overturning upon steep inclined planes having a rise of 1 ft in 3 ft or 4 ft (1 m in 3 m or 4 m).
Industry:Mining
Staff. A small pillar of coal left in a critical spot; also, a principal support in thick coal workings.
Industry:Mining
Staff. Miners' term for a thin, unworkable coal seam occurring above or below a workable seam.
Industry:Mining
Staff. Sudden bursting of coal from the face, owing to tension caused by unequal pressure. The term "airblast" is sometimes used in metal mines, esp. in South Africa.
Industry:Mining
Stage of froth-flotation process in which the surfaces of the coal or associated impurities present in a pulp are treated with appropriate chemicals to influence their reaction when the pulp is aerated.
Industry:Mining
Stain formed by air entering at edges of mica sheets and penetrating along cleavage planes.
Industry:Mining
Stakes or points on the far side of the zero point from which a job was originally laid out.
Industry:Mining
