- 업종: 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 ...
A dredge in which the material excavated is lifted by a single bucket on the end of an arm, in the same manner as in the ordinary steam shovel.
Industry:Mining
A dredger consisting of a single large bucket at the end of a long arm, swung in a vertical plane by gearing. The bucket capacity may be up to about 12 cubic yards.
Industry:Mining
A dredging appliance consisting of a grab or grab bucket suspended from the jib head of a crane, which does the necessary raising and lowering.
Industry:Mining
A dredging appliance consisting of a grab or grab bucket suspended from the jib head of a crane, which does the necessary raising and lowering.
Industry:Mining
A dressed product of copper works in South America, consisting of grains of native copper mixed with pyrite, chalcopyrite, mispickel, and earthy minerals.
Industry:Mining
A drier in the shape of an inclined rotating tube used to dry loose material as it rolls through.
Industry:Mining
A drier in which the wet material moves through the drying cycle in an uninterrupted flow pattern in contrast to a batch drier.
Industry:Mining
A drift (usually inclined) from the surface to the coal seam or orebody to be developed.
Industry:Mining
