- المجال: Mining
- Number of terms: 33118
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- 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 truncated-cone-shaped refractory piece which sits in the bottom of an ingot mold.
Industry:Mining
A trunnion-supported, revolving cylinder, the inner surface of which is fitted with continuous or interrupted ribbon flighting.
Industry:Mining
A tub-changing arrangement for a tunnel face. The double-track loop is superimposed on the tunnel track and equipped with ramps, clamps, and spring switches so arranged that the loaded cars take one track outward while the empties take the other track inward.
Industry:Mining
A tub-changing arrangement for a tunnel face. The double-track loop is superimposed on the tunnel track and equipped with ramps, clamps, and spring switches so arranged that the loaded cars take one track outward while the empties take the other track inward.
Industry:Mining
A tube made by drawing mild steel strip through a bell, so that the strip is coiled into a tube, the edges being then pressed together and welded.
Industry:Mining