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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 ...
Foliated galena.
Industry:Mining
Foliation that developed parallel to the axial plane of a fold and perpendicular to the principal deformational pressure.
Industry:Mining
Following a vein by its range or direction.
Industry:Mining
For a given air quantity, the efficient airway size is that size for which the combined capital and operating cost is minimal.
Industry:Mining
For a mine fan, the natural ventilation pressure deducted from the total ventilation pressure required to circulate air through the mine.
Industry:Mining
For a roller chain, the distance between the link plates of a roller link. This is not the overall width of the chain. For a silent chain, the width over the working-link plates of the chain, exclusive of pinheads, washers, or other fastening devices.
Industry:Mining
For a roller chain, the distance in inches between the centers of adjacent joint members. For a silent chain, the distance in inches between the centers of the holes in a link plate.
Industry:Mining
For an explosion, the maximum weight of charge that can be fired without causing an ignition in gallery tests.
Industry:Mining
For double-pitch roller chains, a sprocket having one set of effective teeth.
Industry:Mining
For double-pitch roller chains, a sprocket having two sets of effective teeth. Tooth spaces for the second set are located midway between those of the first set.
Industry:Mining
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