- 行业: Mining
- Number of terms: 33118
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- 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 ...
A toothless blade fitted at the back with a block handle, used with sand, for cutting slabs of marble into pieces.
Industry:Mining
A topographic configuration that is the inverse of the geologic structure, as where mountains occupy the sites of synclines and valleys occupy the sites of anticlines.
Industry:Mining
A topographic contour determined (1) by stereoscopic study of aerial photographs without ground control or (2) by other means not involving conventional surveying.
Industry:Mining
A tough outer covering or cable sheath of rubber, rubber compound, or thermoplastic, designed to protect cable conductors and insulation from abrasion or other damage from external sources.
Industry:Mining
A tough, compact, and white, greenish, or grayish mineral aggregate consisting of a mixture of albite (or oligoclase) and zoisite or epidote, together with variable amounts of calcite, sericite, prehnite, and calcium-aluminum silicates other than those of the epidote group. It is an alteration product of plagioclase; once thought to be a mineral species.
Industry:Mining