- 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 bin installed adjacent to the shaft bottom in skip winding. The capacity of the chute is equal to that of the skip used, ranging from 4 to 10 st (3.6 to 9.1 t). Bin-feeding arrangements differ but may be by a steelplate conveyor from a surge bunker that in turn receives the ore or coal from the mine cars or a trunk conveyor. A measuring chute ensures a quick and correct loading of skips without spillage. Immediately the skip is positioned in line, the measuring chute bottom door opens and material is discharged into the skip.
Industry:Mining
A bin or tank to facilitate the concrete lining of circular shafts. The concrete is mixed on the surface, taken down the shaft in buckets, and discharged into the octopus. The concrete is then led away through flexible rubber pipes to different points around the shaft.
Industry:Mining
A biological division made up of all the swimming animals found in the pelagic division.
Industry:Mining
A bit containing a single layer of diamonds set so that the diamonds protrude on the surface of the crown.
Industry:Mining
A bit containing a single layer of diamonds set so that the diamonds protrude on the surface of the crown.
Industry:Mining
A bit crown, the face of which is covered with a series of stubby pyramids, each apex of which is set with a diamond.
Industry:Mining
A bit designed and used to drill the first portion of a deflected hole alongside and beyond the deflection wedge; also, a bit used to drill a rathole. Compare: wedge bit.
Industry:Mining
A bit designed for attachment to standard coupled pipe for use in securing the pipe in bedrock. Can be set with diamonds or other abrasive materials.
Industry:Mining
A bit designed for drilling in soft formations and for use on a double-tube core barrel, the inner tube of which fits snugly into a recess cut into the inside wall of the bit directly above the inside reaming stones. The bit is provided with a number of holes drilled longitudinally through the wall of the bit, through which the circulation liquid flows and is ejected at the cutting face of the bit.
Industry:Mining
A bit designed for drilling in soft formations and for use on a double-tube core barrel, the inner tube of which fits snugly into a recess cut into the inside wall of the bit directly above the inside reaming stones. The bit is provided with a number of holes drilled longitudinally through the wall of the bit, through which the circulation liquid flows and is ejected at the cutting face of the bit.
Industry:Mining
