- 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 excavation lines of a tunnel within which the rock removed is paid for at the agreed contract rate.
Industry:Mining
The excavation of the development drift together with the stope in overhand stoping. Employed in cases where the hanging wall is strong.
Industry:Mining
The exhalation of carbon dioxide in an area of late-stage volcanic activity; also, the small opening from which the gas is emitted. Occurs in Yellowstone National Park. Etymol: French, noxious gas.
Industry:Mining
The exhalation, visible vapor, or material that escapes or is expelled from a burning substance during combustion; applied esp. to the volatile matter expelled from wood, coal, peat, etc. together with the solid matter that is carried off in suspension with it. That which is expelled from metallic substances is generally called fume or fumes.
Industry:Mining
The exhaustion of a mine or a petroleum reservoir by extracting the minerals.
Industry:Mining
The exhibition of interference colors from the surface or interior of a mineral, caused by light interference from thin films or layers of different refractive index. Labradorite and some other feldspars show it. The tarnish on the surface of coal, copper pyrites, etc., is sometimes iridescent. Adj. iridescent.
Industry:Mining
The existence of any condition or practice that could reasonably be expected to cause death or serious physical harm before such condition or practice can be abated.
Industry:Mining
The expansion of air under constant temperature. Since the air does work on expanding, it loses heat; consequently, heat must be added to the air to maintain it at constant temperature.
Industry:Mining
