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United States Bureau of Mines
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 ...
Coal below the undercut; it may or may not be removed.
Industry:Mining
Coal consisting of vitrain and durain with more or less minor clarain and minor fusain.
Industry:Mining
Coal contained in, and sometimes salvaged from, the bank.
Industry:Mining
Coal containing 35% to 40% volatiles (dry, ashless basis).
Industry:Mining
Coal containing slaty material in its composition.
Industry:Mining
Coal excluding its mineral matter and moisture.
Industry:Mining
Coal for use around colliery in miners' houses and for local sale.
Industry:Mining
Coal from which all stones and inferior coal have been picked out by hand; large lumps.
Industry:Mining
Coal from which impurities have been removed mechanically without the use of liquid media.
Industry:Mining
Coal having a weathering index, as defined by U.S. Bureau of Mines standards, of less than 5%.
Industry:Mining