- 업종: 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 ...
A bed that contains, or is likely to contain, ore minerals; one that is productive as opposed to dead or barren.
Industry:Mining
A bed that, in a particular case of folding, has yielded to the lateral pressure by plastic adjustment and flow. This may result in the bedding being thrown into complex structures or in the development of more regular internal structures, particularly drag folds and fracture cleavage. The bed tends to thicken toward the hinges, and to thin in the limbs, of the folds. See also: competent bed.
Industry:Mining
A bedded, blanketlike mass of rock composed mainly of the remains of sedentary organisms; an organic layer, such as a bed of shells or corals, or even a coal seam. Compare: bioherm.
Industry:Mining
A bell-shaped or hollow, tubular device filled with wax or other water-resistant plastic materials, which is lowered onto an article resting on the bottom of a borehole. The plastic material molds itself about the lost article, and by inspecting the impression so formed, the driller can determine which fishing tool is best fitted to recover the lost article.
Industry:Mining
A belt conveyor having a conveying surface of two or more spaced strands of narrow flat belts.
Industry:Mining
A belt conveyor in a blending system that receives bulk materials for delivery to the stacker conveyor.
Industry:Mining
A belt conveyor in which the carrying side is made to form a shallow trough by means of troughing idlers.
Industry:Mining
A belt conveyor so arranged that it can be lengthened or shortened by the addition or the removal of interchangeable increments or parts.
Industry:Mining
A belt conveyor that carries the coal or ore on the lower strand; often used where height is limited.
Industry:Mining
