- 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 cataclastic rock that has been formed by shattering (or cataclasis), which has been less extreme than in mylonite.
Industry:Mining
A catch ring on a retractable wedge that engages a lifting device on the deflection barrel or bit, enabling the drill runner to remove a deflecting wedge from a borehole after deflection has been effected.
Industry:Mining
A category in the hierarchy of plant and animal classification intermediate in rank between family and species. Adj: generic. Plural: genera.
Industry:Mining
A caustobiolith formed by the direct accumulation of vegetal matter; e.g., peat, lignite, and coal.
Industry:Mining
A cave in which the earth fill contains appreciable quantities of nitrates; once mined commercially.
Industry:Mining
A cave in which the earth fill contains appreciable quantities of nitrates; once mined commercially.
Industry:Mining
A caving in of the surface at the outcrop of the bed; caused by mining operations. Applied also to falls occurring at points not on the outcrop of the bed. Synonymous with day fall.
Industry:Mining
A cavity formed in certain rocks in which percolating sollutions have filled with valuable minerals; cavities formed in certain rocks, such as limestones, where portions have been dissolved by percolating waters.
Industry:Mining
A cavity in a pump barrel to catch sand and keep it out of the way of the plunger or buckets.
Industry:Mining
