- 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 ...
A staff gage placed on an incline and graduated to indicate vertical heights.
Industry:Mining
A stage in bituminous coal crushing in which units for crushing screenings reduce secondary product to final small, commercial sizes, such as 1- to 3/8-in (2.5- to 1-cm) stoker coal or screenings.
Industry:Mining
A stage in bituminous coal crushing that occurs at the entrance to a plant and consists of raw feed flowing into the primary breaker for reduction to a maximum top size of 4 in, 5 in, 6 in, or 8 in (10.2 cm, 12.7 cm, 15.2 cm, or 20.3 cm) either for washing or for other preparation purposes.
Industry:Mining
A stage in the heating of a clay when some of the ingredients have melted and have partially or completely closed the pores, as in stoneware and porcelain. The completion of this stage occurs at the point of maximum shrinkage without loss of shape.
Industry:Mining
A stage in the heating of clay when so much of the material has fused that the mass begins to lose its shape and becomes viscous.
Industry:Mining
A stage of three, four, or five axes of rotation, attached to the rotating stage of a polarized-light microscope, that enables a thin section or mineral grain under study to be turned in a precisely controlled fashion about three mutually orthogonal axes. It is used to determine precisely the optical properties and parameters of minerals or their orientation in a set of external coordinates.
Industry:Mining
A stage of three, four, or five axes of rotation, attached to the rotating stage of a polarized-light microscope, that enables a thin section or mineral grain under study to be turned in a precisely controlled fashion about three mutually orthogonal axes. It is used to determine precisely the optical properties and parameters of minerals or their orientation in a set of external coordinates.
Industry:Mining
A stage of three, four, or five axes of rotation, attached to the rotating stage of a polarized-light microscope, that enables a thin section or mineral grain under study to be turned in a precisely controlled fashion about three mutually orthogonal axes. It is used to determine precisely the optical properties and parameters of minerals or their orientation in a set of external coordinates.
Industry:Mining
A staging or platform erected over the moving conveyor at a ripping lip of a gate road, on which the miners can stand and work. This implies that the coalface and conveyor loading point are some distance ahead.
Industry:Mining
