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United States Bureau of Mines
Industry: 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 bursts caused by stoping operations to distinguish them from development bursts, which are called inherent.
Industry:Mining
Rock chips cut by a bit in the process of well drilling and removed from the hole by pumping or bailing. Well cuttings collected at closely spaced intervals provide a record of the strata penetrated.
Industry:Mining
Rock cleavage in which flakes are produced that are barely visible to the unaided eye. It is coarser than slaty cleavage and finer than schistose cleavage.
Industry:Mining
Rock consisting of both calcite and dolomite crystals.
Industry:Mining
Rock crystal (quartz) from the Tanjore District, India.
Industry:Mining
Rock crystal (quartz).
Industry:Mining
Rock crystal variety of quartz.
Industry:Mining
Rock crystal variety of quartz.
Industry:Mining
Rock drilling by hand; e.g., in narrow reefs. A drill steel held in the left hand is struck blows with a 4-lb (1.8-kg) hammer, the drill being turned between the blows. The drilling is very slow and laborious.
Industry:Mining
Rock falling from the roof into a mine opening.
Industry:Mining
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