- 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 ...
Rock occurring in or taken from a body of talus; usually refers to ganister.
Industry:Mining
Rock or formations that, when drilled, produce cuttings and sludge that tend to collect on, and adhere to, borehole walls and drill-stem equipment in sticky or gummy masses. Compare: gummy; sticky.
Industry:Mining
Rock or material failure in which the ultimate shearing resistance is progressively mobilized along the failure surface.
Industry:Mining
Rock that breaks into small pieces when drilled and tends to cave or slough into the hole when the drill string is pulled, or binds the drill string by becoming wedged or locked between the drill rod and the borehole wall.
Industry:Mining
Rock that has been broken in a mechanical crusher and has not been subjected to any subsequent screening process.
Industry:Mining
Rock that remains unbroken inside the neat lines in a tunnel or shaft after firing a round of explosive shots. Compare: overbreak
Industry:Mining
Rock, the character of which has been changed by exposure to decaying conditions found in the zone of weathering.
Industry:Mining
Rockbursts in which there is actual failure at the face accompanied by movement of the walls.
Industry:Mining
