- 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 joint in a joint set that is concentric, with the joints dipping toward a common center.
Industry:Mining
A joint that forms parallel to the direction of compression; a joint that is an extension fracture.
Industry:Mining
A joint that is transverse to the strike of the strata or schistosity.
Industry:Mining
A joint that strikes approx. perpendicularly to the strike of the bedding or cleavage.
Industry:Mining
A joist that has one end terminating against a header joist. See: tail beam.
Industry:Mining