- 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 ...
The operation of loading broken rock by hand or machine, usually in shafts or tunnels.
Industry:Mining
The operation of mudcapping or plaster shooting whereby rock is blasted without drilling. An explosive is placed on top of the rock and covered by a cap of mud or similar material.
Industry:Mining
The operation of polishing as carried out on a linisher. This machine is designed for the polishing of flat objects and carries a flat revolving cloth belt whose surface is impregnated with a suitable abrasive material.
Industry:Mining
The operation of raising the grade or purity of a concentrate by violent stirring, followed by packing, in a kieve or open dolly tub. Chimming is a similar process on a smaller scale. See: tozing
Industry:Mining
The operator's mineral ownership involving the costs of drilling, completion, equipment, and producing in contrast to the (free) royalty interest.
Industry:Mining
The optical character of crystals belonging to the orthorhombic, monoclinic, and triclinic systems, which exhibit double refraction, but have two directions of single refraction and isotropy, i.e., two optic axes. Compare: uniaxial
Industry:Mining
The optical continuity of crystals or grains, as disturbed by a divergent structure caused by slight differences in orientation.
Industry:Mining
The optical property of a mineral to transmit light without objects being visible. Compare: opaque
Industry:Mining
The order of sequence in which personal health sampling equipment parts are assembled together to complete the cycle of assimilated breathed atmosphere that a person is exposed to during the working time period.
Industry:Mining
