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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 ...
A porphyritic igneous rock, containing phenocrysts of albite in a groundmass chiefly consisting of albite. Muscovite, garnet, apatite, quartz, and opaque oxides are common accessory minerals.
Industry:Mining
A porphyritic igneous rock, containing phenocrysts of albite in a groundmass chiefly consisting of albite. Muscovite, garnet, apatite, quartz, and opaque oxides are common accessory minerals.
Industry:Mining
A porphyritic igneous rock, containing phenocrysts of albite in a groundmass chiefly consisting of albite. Muscovite, garnet, apatite, quartz, and opaque oxides are common accessory minerals.
Industry:Mining
A porphyry in which the phenocrysts are gathered in distinct clusters.
Industry:Mining
A portable apparatus (as the Koltze tube, an impinger, etc.) used to measure dust concentration in a mine or mill, as a health precaution.
Industry:Mining
A portable appliance for carrying out uniaxial compression tests at a site.
Industry:Mining
A portable appliance for carrying out uniaxial compression tests at a site.
Industry:Mining
A portable ball hardness tester in which the load is applied by means of a vise or lever. It carries a special lens for measuring the impression's diameter and from which the Brinell hardness value can be read directly.
Industry:Mining
A portable battery-operated lamp attached to the front or rear of a personnel train.
Industry:Mining
A portable battery-operated lamp incorporating a tungsten filament light source within a glass of the dome or well-glass type and providing maximum illumination in the horizontal plane.
Industry:Mining
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