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United States Bureau of Mines
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 ...
Removal of tree stumps before excavation starts on a construction site.
Industry:Mining
Remove explosives.
Industry:Mining
Removing bug dust from an undercut.
Industry:Mining
Removing solid matter from the bottom of an area covered by water.
Industry:Mining
Removing the headings from off the wash dirt, which is left undisturbed.
Industry:Mining
Removing the last of the coal from an entry.
Industry:Mining
Removing the last traces of suspended matter from solutions by passing them through a filter coated with diatomaceous earth or similar material.
Industry:Mining
Repeated twinning of three or more individual crystals according to the same twin law but with the twin axes or twin planes not parallel, commonly resulting in threefold, fourfold, fivefold, sixfold, or eightfold twins, which, if equally developed, display geometrical symmetry not found in single crystals, e.g., chrysoberyl, rutile. Compare: repeated twinning; polysynthetic twinning.
Industry:Mining
Repetitious concentric compositional variation in minerals resulting from cyclical changes in the chemical environment during crystal growth; e.g., garnet and plagioclase.
Industry:Mining
Replacement or alteration of minerals, esp. feldspars and micas, to form kaolin as a result of weathering or hydrothermal alteration. Compare: argillation; argillization.
Industry:Mining
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