- 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 distance between an area of wave generation and a point of passage of the resulting waves outside the area.
Industry:Mining
The distance between any two parts of an index plane (e.g., bed or vein) disrupted by a fault.
Industry:Mining
The distance between axial surfaces of adjacent antiforms and synforms where the folds occur in the same layer or surface.
Industry:Mining
The distance between boreholes drilled for exploration or sampling purposes. With bedded minerals, the holes may be positioned at the intersection points of coordinates or at the corners of equilateral triangles with sides from 30 to 200 m apart. The spacing is closer with patchy deposits. With metallic ores following belts across country, the holes are spaced along lines crossing the orebody in order to yield cross sections of the ore at definite intervals. In the case of known and semiproved coalfields, boreholes at 1/2- to 1- km intervals may suffice.
Industry:Mining
The distance between roll faces or plates in a crusher. In the case of jaw and roll crushers, the setting controls the maximum size, and to some extent the grading of the product produced. The best setting is usually that which produces 10% to 15% of oversize pieces, which are fed back for recrushing. Gyratory breakers do not permit any marked variation in the setting or in the size of the product.
Industry:Mining
The distance between the centers of support, or the clear distance between supports plus the effective depth of the beam or slab, the lesser value being taken.
Industry:Mining
The distance between the contact points on the front and back wheels of any vehicle and the surface upon which the vehicle travels.
Industry:Mining
The distance between the two parts of a disrupted bed, dike, vein, or of any recognizable surface, measured perpendicular to the bedding plane or surface in question. It is measured in a vertical plane at right angles to the strike of the disrupted surface.
Industry:Mining
The distance between the wall of the borehole and the outside of a piece of drill-string equipment when the string is centered in the borehole.
Industry:Mining
