- المجال: Mining
- Number of terms: 33118
- Number of blossaries: 0
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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 term used for the small hoist employed to haul a trip of empty cars under the loading end of a gathering conveyor or elevator.
Industry:Mining
A term used for the small hoist employed to haul a trip of empty cars under the loading end of a gathering conveyor or elevator.
Industry:Mining
A term used in Alaska to describe gold-bearing gravel mined during the winter and stored on the surface for sluicing in the spring and summer.
Industry:Mining
A term used in Bihar, India, for a kind of hoe used in mines for scraping waste debris into pans for carrying or loading cars.
Industry:Mining
A term used in both belt and chain conveyor work to designate that portion of the conveyor used for discharging the coal.
Industry:Mining
A term used in Brazil for disaggregated, powdery itabirite, and for variegated thinbedded, high-grade hematite iron ores associated with and often forming the matrix of gold ore. Etymol. from its resemblance to the colors of the plumage of Pipile jacutinga, a Brazilian bird. Compare: itabirite
Industry:Mining
A term used in connection with coal washing or other processes using fluid.
Industry:Mining
A term used in Cornwall, England, for a granular rock composed essentially of aggregates of needlelike crystals of black tourmaline (schorl) associated with quartz, and resulting from the complete tourmalinization of granite.
Industry:Mining
A term used in different connotations by various authors and perhaps best abandoned. It has been used to describe: (1) the surface effects of gases near volcanoes; (2) contactmetamorphic effects surrounding deep-seated intrusives; (3) that stage in igneous differentiation between pegmatitic and hydrothermal, which is supposed to be characterized by gas-crystal equilibria; and (4) very loosely, any deposit containing minerals or elements commonly formed in pneumatolysis, such as tourmaline, topaz, fluorite, lithium, and tin, and hence presumed to have formed from a gas phase. Compare: pneumatogenic
Industry:Mining
