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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 ...
Lagging placed a few inches apart.
Industry:Mining
Lamellar intergrowths of pyroxene of different kinds, as with the feldspars. Also pyroxene microperthite, pyroxene cryptoperthite.
Industry:Mining
Lampblack obtained by burning common coal tar.
Industry:Mining
Lanc. A cistern (or trough) into which the water is pumped from a mine.
Industry:Mining
Lanc. A dark-brown powdery substance, consisting of silica, alumina, and iron; found in iron mines.
Industry:Mining
Lanc. A plan of building or putting together tubbing plates from the top downward, the rings and segments being bolted together as the work of excavation proceeds.
Industry:Mining
Lanc. A shaly coal.
Industry:Mining
Lanc. A strong, striped shale and a streaky, banded sandstone or siltstone, interbedded in such a manner as to resemble a mixed linen and woolen fabric (linsey-woolsey). Compare: whintin
Industry:Mining
Lanc. Opening leading from a working face to the surface.
Industry:Mining
Lanc. Pipes fixed down the side of a shaft for conducting water from one level or sump to another.
Industry:Mining