- 업종: 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 device consisting essentially of a sandbox and a series of plungers for gradually lowering into position a heavy weight, supported by the plungers, by running out the sand below.
Industry:Mining
A device consisting of a bit attached to knuckle-jointed rods used to drill a curved borehole or branched holes from a parent borehole.
Industry:Mining
A device consisting of a riffled deck, usually inclined in two directions to the horizontal, to which a differential reciprocating motion in a substantially horizontal direction is imparted; the material to be separated is fed in a stream of water, the heavy particles collect between the riffles and are there conveyed in the direction of the reciprocating motion while the lighter particles are borne by the current of water over the riffles, to be discharged laterally from the table.
Industry:Mining
A device consisting of a united pair of iron plates hinged to shoes fitting over the rails to replace, on the track, derailed railway rolling stock. Also used for mine cars.
Industry:Mining
A device consisting of an approved or permissible explosive covered by a sheath encased in a sealed covering and designed to be fired outside the confines of a borehole.
Industry:Mining
A device consisting of bristles set in a suitable backing used for cleaning a conveyor belt. It is usually of the rotary type.
Industry:Mining
A device consisting of one or more plates, or a hopper receiving and placing material on the conveyor belt for transport. When such a loading station is located at the tail end, it is 1827 known as a tail-end loading station; when it is located along the intermediate section, it is known as an intermediate loading station.
Industry:Mining
A device designed to reduce a sample of coal or ore to half its original size. The box contains about 12 chutes discharging alternately to opposite sides. The width varies according to the largest particle size. The volume reduction is rapid for dry material of suitable fineness.
Industry:Mining
A device developed by the U.S. Navy Ordnance Laboratory for sampling coral and sand bottoms. It consists of a four-legged pyramidal frame about 8 ft (2.4 m) high, a pneumatic hammer with air supply and exhaust hosing, 400 lb (180 kg) of lead weight, an anvil, and a 4-ft-long (1.2-m-long) aluminum barrel with a driving head for cutting through coral.
Industry:Mining
