- 行业: 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 ...
The time required to couple together the component parts of a drill or casing string and the lowering of such a string to the working position in a borehole.
Industry:Mining
The time required to drill a few holes for trolley hangers or a few short block holes, or one or two holes for bringing down a piece of loose roof.
Industry:Mining
The time that elapses between the application of current and the fusion of the bridge wire when using instantaneous blasting caps.
Industry:Mining
The top of a precast concrete pile, protected during driving by packing under a pile helmet and sometimes by a timber dolly. The top of a timber pile is protected by a driving band.
Industry:Mining
The Tornado crusher is based on the principle of central impeller shoes spinning to hurl particles of gravel against breaker plates at tremendous speed. The impact literally "explodes" the rock, causing it to cleave across the grain as well as with the grain, producing the most desirable cubical product.
Industry:Mining
The total amount of excavation in a road or a road section, without regard to fill requirements.
Industry:Mining
