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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 ...
Smaller of a pair of toothed wheels, e.g., the pinion geared to the driven crown wheel of a ball mill.
Industry:Mining
Small-scale folding (wavelength of a few millimeters) that occurs chiefly in metamorphic rocks. Compare: plication
Industry:Mining
Smelter contracts make frequent use of the work unit. A unit means 1%. Since a short ton contains 2,000 lb (907.2 kg), a unit is equivalent to 20 lb/t (10.0 kg/t) of ore.
Industry:Mining
Smelting or recovery furnaces in which evaporated black liquor is burned to a molten chemical smelt.
Industry:Mining
Smokeless and flameless safety explosive consisting of ammonium nitrate and dinitrobenzene or dinitrochloro benzene; used in mines.
Industry:Mining
Sodium hydroxide, NaOH; deliquescent; a soapy feel; its solution in water is strongly alkaline. The molten caustic dissolves such materials as enamels, sand, or glass, which contain a high percentage of silica.
Industry:Mining
Soft clay overlying or underlying coal.
Industry:Mining
Soft copper rivets used in the Hall-Rowe wedge to connect the drive and pilot wedges; they can be sheared off to leave the drive wedge as a permanent reference in the borehole at the point at which the hole is to be deflected.
Industry:Mining
Soft freestone between the Chert Vein and House Cap in the Portland beds at Winspit, Purbeck, U.K.
Industry:Mining
Soft or earthy aphrite.
Industry:Mining
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