- 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 ...
In quarrying, a rock channeler designed to operate from a track on which it is mounted; frequently a combined locomotive and channeling machine.
Industry:Mining
In quarrying, a saw gang that slides back and forth on a bed, as contrasted with the ordinary saw gang that swings back and forth when suspended from above.
Industry:Mining
In quarrying, a term applied to a block of stone bounded by three pairs of parallel faces, none of which intersect at right angles.
Industry:Mining
In quarrying, an arrangement consisting of a combination of vertical and horizontal holes.
Industry:Mining
In quarrying, consists of the removal by blasting of rock protruding above the level of the quarry floor or bench, to allow the movement of loading and transport equipment.
Industry:Mining
In quarrying, control on fracture is based on the experimental determination of the type and the grade of explosive, the loading ratio, and the pattern of boreholes.
Industry:Mining
In quarrying, the reduction in size or dimension of blasted rock by additional or secondary blasting.
Industry:Mining
In quarrying, used to describe the condition of the base after a blast. It may be a good or bad base fracture.
Industry:Mining
In railroading, a short sidetrack connecting with the main track at one end only.
Industry:Mining
