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United States Bureau of Mines
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 ...
A thin slab of quartz which, by mechanical vibration, controls the frequency of a radio transmitter.
Industry:Mining
A thin stratum of shale or other inorganic rock material in a coal seam.
Industry:Mining
A thin stratum of shale or other inorganic rock material in a coal seam.
Industry:Mining
A thin stratum of shale or other inorganic rock material in a coal seam.
Industry:Mining
A thin stratum of shale or other inorganic rock material in a coal seam.
Industry:Mining
A thin stratum of shale or other inorganic rock material in a coal seam.
Industry:Mining
A thin, dense, nodular, relatively unfossiliferous fresh-water limestone underlying coal deposits, so named because it is closely related to underclay.
Industry:Mining
A thin, persistent bed of bluish clay that is found near the base of the No. 6 coal throughout the Illinois-Indiana basin.
Industry:Mining
A thin, tabular chip of an uncut diamond crystal, weighing less than 0.75 carat.
Industry:Mining
A thin, wide iron tool for cleaning clinkers from the grate bars of a furnace.
Industry:Mining
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