- Industry: 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 ...
Arkansas. To gradually loosen over a considerable area and sag; said of the rock over a mine working.
Industry:Mining
Arkansas. To have an opportunity to load out all the coal a miner has loosened.
Industry:Mining
Arkose that has been welded or recrystallized by metamorphism so that it resembles a granite or a granitized sediment. Compare: recomposed granite
Industry:Mining
Arranged in a line or lines; pertaining to the linelike character of some object or objects.- -n. Not recommended as a syn. of lineament.
Industry:Mining
Arrangement by which internal currents are induced in a mass of metal as it moves relative to a magnetic field.
Industry:Mining
Arrangement in magnetic separator whereby ore travels alternately through normal concentration and entropy fields, thus stirring attracted material and shaking out entrained nonmagnetics.
Industry:Mining
Arrangement of cages or skips in mine shaft in which the winding drum raises one and at the same time lowers the other, thus reducing power consumption.
Industry:Mining
Arrangement used in large-scale rock tunneling. Retractable drills with pneumatic power legs are mounted on prefabricated steel ladders in tiers, connected into a holding frame or jumbo. As many as 22 drills can be worked simultaneously by a small labor force.
Industry:Mining
Arranging the quarry layout so that pools of water do not collect in the working area. One-half percent grade away from the face will generally keep the floor free of mud and water.
Industry:Mining
