- 行业: 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 ...
The deposition of minerals in the voids of rocks or between the grains of loose sediment.
Industry:Mining
The depression, approx. conical in shape, that is produced in a water table or in the piezometric surface by pumping or artesian flow. The shape of the depression is because of the fact that the water must flow through progressively smaller cross sections as it nears the well, and hence the hydraulic gradient must be steeper.
Industry:Mining
The depth of an undercut, or holing, from the face of the coal to the end of the undercut.
Industry:Mining
The depth of water in a measuring weir as measured from the bottom of the notch to the surface of the water upstream of the weir. The velocity of approach is not included.
Industry:Mining
The depth of water in an open conduit that corresponds to uniform velocity for the given flow. It is a hypothetical depth under conditions of steady nonuniform flow, the depth for which the surface and bed are parallel; also termed the neutral depth.
Industry:Mining
The description applied to the elastic properties of material, such as timber, which has considerable variations of strength in two or more directions at right angles to one another.
Industry:Mining
The design of steel or reinforced-concrete structural frames which is based on the assumption that plastic hinges form at points of maximum bending moment.
Industry:Mining
