- 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 ...
A rock consisting of small, hard, sharp-cornered, angular fragments, or a rock, the cuttings from which, produced by the action of a drill bit, are hard, sharp-cornered, angular grains, which grind away or abrade the metal on bits and drill-stem equipment at a rapid rate.
Industry:Mining
A rock consisting of small, hard, sharp-cornered, angular fragments, or a rock, the cuttings from which, produced by the action of a drill bit, are hard, sharp-cornered, angular grains, which grind away or abrade the metal on bits and drill-stem equipment at a rapid rate.
Industry:Mining
A rock containing amygdules, or the structure of a rock resulting from its presence.
Industry:Mining
A rock drill operated without water and hence, produces a lot of dust, leading to silicosis; often fatal to a miner.
Industry:Mining
A rock formation in which a high recovery of core can be attained at a high rate of penetration.
Industry:Mining
A rock formation, the cuttings of which do not tend to mud up on the face of a diamond or other bit.
Industry:Mining
A rock formed by brecciation of partly consolidated material, followed by practically contemporaneous sedimentation. It is similar in nature and origin to an intraformational conglomerate, but contains fragments showing greater angularity.
Industry:Mining
