- المجال: 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 ...
A quantity of oil, gas, or other minerals sufficient for production in paying quantities.
Industry:Mining
A quantity represented by the acceleration due to gravity times the difference in the curvatures in the two principal planes; i.e., g(1/p<sub>1</sub>- 1/p<sub>2</sub>) where p<sub>1</sub>and p<sub>2</sub>are the radii of curvature of the two principal planes.
Industry:Mining
A quantity that specifies the speed with which a wave travels through a medium.
Industry:Mining
A quarry blasting hole, the bottom of which has been enlarged or chambered to receive a heavy explosive charge.
Industry:Mining
A quarry cut into and along the hillside; may comprise a single face or a series of benches. If the depth of face is not more than about 30 ft (9 m) it can be worked in one cut, but deeper faces are usually worked in two or more benches.
Industry:Mining
A quarry in which the joints are numerous and irregular, so that the stone has been broken naturally into comparatively small blocks. A local term applied to certain marble quarries in the region of Knoxville, TN, where erosion has formed many large cavities and cracks, between which the rock stands up as pinnacles. The cavities are now filled with clay.
Industry:Mining
A quarry in which the opening is the full size of the excavation. One open to daylight.
Industry:Mining
A quarry in which the walls slant outward (overhang the working face) so as to make the floorspace wider with increasing depth.
Industry:Mining
A quarry term applied to a block of stone bounded by 3 pairs of parallel faces--4 of the 12 interfacial angles being right angles, 4 obtuse, and 4 acute.
Industry:Mining
