- 産業: 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 conduit or open ditch for carrying off surplus ground or surface water. Closed drains are usually buried.
Industry:Mining
A cone for coal washing; similar to the Callow and Caldecott cones.
Industry:Mining
A cone penetrator equipped with a device that will register the pressure required to drive the cone downward into the formation being tested.
Industry:Mining
A conglomerate exhibiting edgewise structure; e.g., an intraformational conglomerate containing elongated calcareous pebbles that are transverse to the bedding.
Industry:Mining
A conglomerate or breccia with rapid lateral passage through grit to fine sandstone; cement usually ferruginous with some lime and alumina. Characteristically developed amid variegated clays of Etruria Marl group of Upper Coal Measures in the English Midlands.
Industry:Mining
A conglomerate that has reached the same state of induration as a quartzite.
Industry:Mining
A conical cavity in a coal mine roof caused by the falling of a large concretion; or, as of a bell mold.
Industry:Mining
A conical free-settling tank. Pulp is fed centrally; the finer solid fraction overflows peripherally, and the coarser fraction is withdrawn at a controlled rate via the apex at the cone's bottom.
Industry:Mining
