- 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 zone around any excavation within which a structure might be disturbed by rock movements resulting from that excavation.
Industry:Mining
The zone deep in the Earth's crust in which rock flowage takes place. The term, originated in 1898 by Van Hise, is now little used. Compare: anamorphism
Industry:Mining
The zone in which supergene enrichment has taken place.
Industry:Mining
The zone in which the interstices of the functional permeable rocks are not (except temporarily) filled with water under hydrostatic pressure; the interstices are either not filled with water or are filled with water that is held by capillarity.
Industry:Mining
The zone of contact between the goaf gases and the ventilation air current at the face.
Industry:Mining
The zone of maximum air velocity in a mine roadway, usually at or near the center of the road.
Industry:Mining
The zone of rock surrounding an excavation, in which the additional stresses caused by the excavation are above a certain arbitrary value, is termed the zone of influence.
Industry:Mining
The zone of shear surrounding a particle immersed in an electrolyte.
Industry:Mining
The zone surrounding an island extending from the line of permanent immersion to about 100 fathoms (600 ft or 183 m) of depth, where a marked or rather steep descent toward the great depths occurs.
Industry:Mining
