- 行业: Mining
- Number of terms: 33118
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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 ...
The rank of coal, within the bituminous class of Classification D 388, such that, on the moist mineral-matter-free basis, the gross calorific value of the coal in British thermal units per pound is equal to greater than 13,000 (30.24 MJ/kg) but less than 14,000 (32.54 MJ/kg) and the coal commonly agglomerates.
Industry:Mining
The rank of coal, within the bituminous class of Classification D 388, such that, on the dry and mineral-matter-free basis, the volatile matter content of the coal is greater than 22% but equal to or less than 31% (or the fixed carbon content is equal to or greater than 69% but less than 78%), and the coal commonly agglomerates. Compare: bituminous coal
Industry:Mining
The rank of coal, within the bituminous class of Classification D 388, such that, on the moist, mineral-matter-free basis, the gross calorific value of the coal in British thermal units per pound is equal to or greater than 11,500 (26.75 MJ/kg) but less than 13,000 (30.24 MJ/kg) and the coal commonly agglomerates, or equal to or greater than 10,500 (24.42 MJ/kg) but less than 11,500 (26.75 MJ/kg) and the coal agglomerates.
Industry:Mining
The rank of coal, within the bituminous class of the Classification D 388, such that on the dry and mineral-matter-free basis, the volatile matter content of the coal is greater than 31% (or the fixed carbon content is less than 69%), and its gross calorific value is equal to or greater than 14,000 Btu/lb (32.54 MJ/kg) of coal on the moist, mineralmatter- free basis, and the coal is commonly agglomerating.
Industry:Mining
The rank of coal, within the lignitic class of Classification D 388, such that, on the moist, mineral-matter-free basis, the gross calorific value of the coal in British thermal units per pound is less than 6,300 (14.65 MJ/kg), and the coal is nonagglomerating.
Industry:Mining
The rank of coal, within the lignitic class of Classification D 388, such that, on the moist, mineral-matter-free basis, the gross calorific value of the coal in British thermal units per pound is equal to greater than 6,300 (14.65 MJ/kg but less than 8,300 (19.31 MJ/kg), and the coal is nonagglomerating.
Industry:Mining
The rank of coal, within the subbituminous class of Classification D 388, such that, on the moist mineral-matter-free basis, the gross calorific value of the coal in British thermal units per pound is greater than 8,300 (19.31 MJ/kg) but less than 9,500 (22.10 MJ/kg), and the coal is nonagglomerating.
Industry:Mining
The rank of coal, within the subbituminous class of Classification D 388, such that, on the moist, mineral-matter-free basis, the gross calorific value of the coal in British thermal units per pound is equal to greater than 10,500 (24.42 MJ/kg) but less than 11,500 (26.75 MJ/kg) and the coal is nonagglomerating.
Industry:Mining
The rank of coal, within the subbituminous class of Classification D 388, such that, on the moist, mineral-matter-free basis, the gross calorific value of the coal in British thermal units per pound is equal to greater than 9,500 (22.10 MJ/kg) but less than 10,500 (24.42 MJ/kg) and the coal is nonagglomerating.
Industry:Mining
The rate at which a given source would deliver energy to a load having an impedance that is the conjugate of the source impedance is designated as the available power of that source.
Industry:Mining
