- Отрасли: 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 comprehensive term that includes doublets, triplets, etc., in which a stone consists of two or more parts either of the same or of different materials cemented or otherwise joined together.
Industry:Mining
A compressed pill consisting of a blended mixture of barium octohydrate and calcium hydroxide. It is used as a carbon dioxide absorbent in rebreathing (diving) systems.
Industry:Mining
A compressed-air machine for spraying concrete on the roof and the sides of mine roadways. Used in coal mines for the fireproofing of roadways, for reducing air leakages, and for spraying tunnels supported by roof bolts.
Industry:Mining
A compressed-air-operated hand machine used by miners to break up the harder rocks in a mine. It consists mainly of a pick and a hammer operated by compressed air. The hammer driving the pick is set in a cylinder, where the compressed air enters and presses the hammer, which in turn drives the wedge-shaped edge of the pick into the rock in short sufficient shocks of from 1,500 to 2,000 blows per minute.
Industry:Mining
A compressed-air-operated hand tool used to excavate coal, ore, and rock, with a punching action. Without the pick steel, its length is about 18 in (46 cm) and weight about 24 lb (10.8 kg). It delivers about 2,500 blows/min. The latest type is the watercontrolled pick, so designed that the air valve is operated by water pressure. The water assists in suppressing the dust made during cutting.
Industry:Mining
A compression term obtained by dividing the power theoretically necessary to compress the gas and deliver it without loss of heat, by the power supplied to the fan or compressor driveshaft.
Industry:Mining
A compressor designed for a delivery pressure of 100 psi (690 kPa) and ranging in capacity from 60 to 300 ft<sub>3</sub>/min (2.1 to 8.5 m<sub>3</sub>/min).
Industry:Mining
A compressor in which air is compressed in a series of stages as it flows axially through a decreasing tubular area.
Industry:Mining
A computer system for managing spatial data. A GIS, e.g., can provide a simultaneous consideration of geology, geophysics, geochemistry, and mineral deposits in a region for the purposes of mineral exploration.
Industry:Mining
