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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 ...
Partially or indistinctly conchoidal.
Industry:Mining
Particle sizes too small for efficient grading on screens; usually minus 200-mesh material. They are examined by elutriation (beaker decantation, sedimentation, infrasizing in air, turbidimetry, permeability).
Industry:Mining
Particles from the feed, of specific gravity equal or close to that of a separating medium, and which are therefore relatively difficult to remove from the bath.
Industry:Mining
Particles having approx. spherical shape.
Industry:Mining
Particles of a refractory material, such as powdered tungsten carbide, cemented together with cobalt to form a metallike mixture.
Industry:Mining
Particles of coal or ore consisting of two or more minerals.
Industry:Mining
Particles of gold so small and thin that they float on water and may be carried off by it.
Industry:Mining
Particles of ore consisting of a single mineral.
Industry:Mining
Particles so small that their surface activity has an appreciable influence on the properties of its aggregate.
Industry:Mining
Particulates in a size range that permits them to penetrate deep into the lungs upon inhalation.
Industry:Mining
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