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United States Bureau of Mines
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 fine-grained soil that undergoes changes in volume and bearing capacity due to frost action (Nelson & Nelson, 1967).
Industry:Mining
A fine-grained soil, made up largely of clay or silt.
Industry:Mining
A fine-grained stone used for sharpening edged tools or other similar metal surfaces.
Industry:Mining
A fine-grained, nonfissile metamorphic rock derived from an argillaceous sediment.
Industry:Mining
A fine-grained, thin-layered variety of itacolumite.
Industry:Mining
A fine-grained, white, kaolinic clay with high retention and suspending properties, high reflectance, and a very low content of free silica. It is used for coating or filling paper.
Industry:Mining
A finely divided calcium carbonate prepared by wet grinding and levigating natural chalk; a variety of limestone.
Industry:Mining
A finely ground calcium carbonate, about 98% pure, contaminated by magnesia, silica, iron, or alumina. This material should not be confused with chalk whiting or precipitated chalk.
Industry:Mining
A finely ground plastic clay that in proportions not lower than 6% gives satisfactory green strength when used as a bond with molding sand.
Industry:Mining
A finely ground-plastic clay of high refractoriness used as a bond for molding sands.
Industry:Mining
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