- 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 ...
Usually a three-wire circuit using alternating current with three equal voltages. This should not be confused with the three-wire service supplying 110 V and 220 V. This latter is merely a two-voltage single-phase circuit arrangement and is used almost universally to provide power and lighting to homes and small business establishments.
Industry:Mining
Usually an inclined reciprocating screen on which the coal travels and through which the hot gases pass. The screen may eliminate moisture in coal up to 2-1/2 in (6.4 cm) in size. It may also serve as a fine coal dryer to treat coals down to 1/8 in (0.32 cm).
Industry:Mining
Usually an inverted glass U-shaped tube filled with a sodium chloride solution, the two legs of which dip into the connecting two vessels of electrolyte, forming an electrochemical cell.
Industry:Mining
Usually applied to brattice cloth, which is a heavy canvas of cotton, hemp, or flax, frequently fireproofed.
Industry:Mining
Usually applied to endless rope haulage in which the rope is carried on top of the mine cars, which may be either clipped or lashed to the rope.
Industry:Mining
Usually column of sand used to vent water squeezed out of humus by weight of fill.
Industry:Mining
Usually found at sand and gravel processing facilities. A mechanical device consisting of a roller (with rows of metal protrusions along its length) placed at a 45 degrees angle just ahead of a feed hopper (or conveyor transfer point). It is usually run by a small electric motor and as roots, large stones, and clay meet the roller, they are dumped off the belt to a small pit that is periodically cleaned out.
Industry:Mining
Usually found in seismographs or seismometers where damping of motion is desired that is in proportion to the velocity of the moving mass.
Industry:Mining
