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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 ...
Eng. Lowering a drift or road.
Industry:Mining
In the froth flotation process, a reagent that reacts with a particle surface to render it less prone to stay in the froth, thus causing it to wet down as a tailing product. Depressants act by complexing elements at surface lattices of minerals that might carry a charge attractive to conditioning agents; by destroying collector coating; by surface modification of particles.
Industry:Mining
Eng. A timber stay or beam in a shaft.
Industry:Mining
Formed, arranged, or laid down in layers or strata; esp. said of any layered sedimentary rock or deposit.
Industry:Mining
Eng. Fibrous carbonate of lime, also known as beef and horseflesh; Isle of Portland.
Industry:Mining
In a soil profile, the uppermost zone from which soluble salts and colloids have been leached and in which organic matter has accumulated.
Industry:Mining
For haulage to the surface through a mine shaft, the surface gear includes a winding drum of cylindrical or cylindroconical form on which the winding rope (hoisting rope) is coiled as the cage, or skip or kibble, is raised, and from which it is paid off as the return journey is made. Two such receptacles are usually worked simultaneously in balanced hoisting, one rising as the other descends, from a compound drum. The drum is driven by the winding engine.
Industry:Mining
Cobalt sulfate.
Industry:Mining
Causing double refraction.
Industry:Mining
In blowpiping, the outer, least visible, and less intense part of the flame, from which oxygen may be added to the compound being tested.
Industry:Mining