- 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 closed pipe, 1 in (2.5 cm) in diameter, with a flush point and a driving tip, used in sounding.
Industry:Mining
A closed structural depression of regional extent in the interior of a continent.
Industry:Mining
A close-grained limestone characterized by dark conspicuous dendritic markings that suggest natural scenery (woodlands, forests); e.g., the argillaceous limestone in the Cotham Marble near Bristol, England.
Industry:Mining
A close-grained limestone characterized by dark conspicuous dendritic markings that suggest natural scenery (woodlands, forests); e.g., the argillaceous limestone in the Cotham Marble near Bristol, England.
Industry:Mining
A clutch that can be engaged to provide a nonslip mechanical drive through a fluid coupling.
Industry:Mining
A clutch whose engagement is controlled by centrifugal force, vacuum, or other power without attention by the operator.
Industry:Mining
A coal basin formed inland from the seacoasts, as opposed to a paralic coal basin.
Industry:Mining