- المجال: 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 slightly curved iron plate fastened to the end of a coal auger to enable a miner to press the auger forward using body pressure.
Industry:Mining
A slightly slanting trough in which revolves a thick shaft or log, carrying blades obliquely set to the axis. Material is fed in at the lower end, water at the upper. The blades slowly convey the lumps of material upward against the current, while any adhering clay is gradually disintegrated and floated out the lower end.
Industry:Mining
A slightly tapering, round stick, used as a pattern for the opening through which molten metal is to be poured into the mold.
Industry:Mining
A sling that has a single hook at one end and an iron or steel ring at the other.
Industry:Mining
A slope is subject to the influence of gravity and possible pressure of ground water, which tend to cause sliding or caving. It is also subject to surface erosion from running water, wind, and alternate freezing and thawing, or wetting and drying. Weathering causes changes in particle size and composition. Bank slope stability can be attained by benching, by growth of vegetation, and by artificial protections, such as masonry walls, drainage systems to intercept or remove ground water, and fences to catch rolling pieces.
Industry:Mining
A sloping wooden table covered with a copper plate on which the mercury is spread in order to amalgamate with the precious metal particles.
Industry:Mining
