- 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 ...
A sharp, local change in the dip of strata or cleavage near a fault. Not commonly used in the United States. Compare: drag
Industry:Mining
A sharp-gritted Ohio or Indiana sandstone used for sharpening shoe knives; also known as shoe stone.
Industry:Mining
A sharp-pointed, thin metal rod about 1 to 2 ft (0.3 to 0.6 m) long with a ring at the other end, used in surveying; a thin metal peg.
Industry:Mining
A shear test in which a relatively thin test specimen of solid circular or annular cross section, usually confined between rings, is subjected to an axial load and to shear in torsion. In-place torsion shear tests may be performed by pressing a dentated solid circular or annular plate against the soil and measuring its resistance to rotation under a given axial load.
Industry:Mining
A shear test on a clay sample after completed consolidation under normal load, carried out in drained conditions. The strengths given by drained tests are higher than those from undrained tests.
Industry:Mining
