- 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 ...
The lowering of the overlying strata in a mine, owing to extraction of the mined material.
Industry:Mining
The lowest grade of mineralized material that qualifies as ore in a given deposit; rock of the lowest assay included in an ore estimate.
Industry:Mining
The lowest pressure at which flame propagation can be obtained through a combustibleoxidant system at a fixed temperature in a particular chamber.
Industry:Mining
The lowest product temperature at which an explosive or explosive unit is approved for use.
Industry:Mining
The lowest water content at which a soil will stick to a metal blade drawn across the surface of the soil mass.
Industry:Mining
The low-temperature increase of weak luminescence, or its development in normally nonfluorescent material.
Industry:Mining
The lungs can be thought of as two elastic bags containing millions of little distensible air sacs. These air sacs or alveoli are all connected to the air passages, which branch and rebranch like the twigs of a tree.
Industry:Mining
The machine used for blowing the stone chippings into the waste area in pneumatic stowing. It consists of a steel paddle wheel revolving in an adjustable casing. Stowing dirt is fed continuously from a hopper to the machine, which in turn blows the material through pipes 5 to 6 in (13 to 15 cm) in diameter into the waste area.
Industry:Mining
