- Industry: 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 ...
An arrangement of soil particles having a comparatively loose, stable structure resembling a honeycomb.
Industry:Mining
An arrangement of two boxes, one working within the other, for forcing air into mines.
Industry:Mining
An arrangement to keep a continuous miner in full operation at all times. It consists of a series of short conveyors, each mounted on driven wheels and coupled into a train to run alongside the heading or room conveyor.
Industry:Mining
An arrangement to preheat the feedwater before it enters the steam boiler. The water flows through a bank of tubes placed across the flue gases as they leave the boiler.
Industry:Mining
An arrangement to provide a link between a continuous miner and the main transport. The equipment is hydraulically driven, and the steel band is coiled on the drivehead.
Industry:Mining
An arrangement to stop and start a mine pump automatically by means of a float switch.
Industry:Mining
An arrangement whereby the starting of one belt conveyor starts all of its feeder conveyors in a predetermined manner. The purpose of sequence starting is to prevent spilling at transfer points and to reduce the power demand in starting the system.
Industry:Mining
An arrangement, using two auxiliary fans, for ventilating a mine tunnel or hard heading. It consists of an exhausting fan with rigid ducting to within about 100 ft (30 m) of the 3420 face, and a forcing fan using a flexible duct discharging air about 20 ft (6 m) from the face. The ducts of the two units overlap by at least 30 ft (9 m) to minimize the recirculation of air. The air delivered by the forcing fan does not exceed about one-third of that removed by the exhaust fan.
Industry:Mining
An array of points, each point at a distance that is the reciprocal of the d spacing between planes in the direction normal to each set of parallel planes as measured from the origin. Each reciprocal-lattice point may be associated with Bragg diffraction in a crystal. Compare: crystal lattice; direct lattice; X-ray diffraction.
Industry:Mining
An arsenatian variety of vanadinite, intermediate in composition between vanadinite and mimetite.
Industry:Mining
