- 行业: Mining
- Number of terms: 33118
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- 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 high-capacity conveyor that takes peaks of production from another conveyor and retains and/or discharges the material when production drops. Such a conveyor may be laid under or alongside a trunk belt near its discharge end. The floor of the bunker comprises a slow-moving steel plate conveyor operated by hydraulic or other power. A movable plow plate, situated over the trunk belt, diverts the material sideways into the bunker conveyor.
Industry:Mining
A high-capacity main road conveyor, usually a belt conveyor. It may extend from the main inby loading point to the shaft bottom or along levels or drifts to the surface. It varies from 42 to 60 in (1.07 to 1.52 m) wide and is powered by a motor of about 200 hp (149 kW).
Industry:Mining
A high-grade ferric-oxide pigment of a purer red hue than either light red or Indian red. Obtained either native as a variety of hematite red or more often artificially, by calcining copperas in the presence of lime. The composition ranges from 15% to 40% ferric oxide and from 60% to 80% calcium sulfate. The 40% ferric oxide is the pure grade, and sp gr, 3.45.
Industry:Mining
A high-grade uranium ore consisting of buried carbon trash that has been replaced or enriched with uranium-bearing solutions.
Industry:Mining
A high-grade, smooth, glossy sheet iron, not liable to rust; once made by a process that was long a secret with Russian manufacturers. The sheets were subjected to severe hammering in piles with powdered charcoal between them.
Industry:Mining
A highly explosive liquid HOCH<sub>2</sub>CH<sub>2</sub>OH ; somewhat volatile; nonfreezing; explosive base. Used as an antifreeze.
Industry:Mining
A highly plastic, sometimes refractory clay, commonly characterized by the presence of organic matter, having unfired colors ranging from light buff to various shades of gray, and used as a bonding constituent of ceramic wares; pipe clay. It has high wet and dry strength, long vitrification range, and high firing shrinkage. Ball clay is so named because of the early English practice of rolling the clay into balls weighing 30 to 50 lb (13 to 22 kg) and having diameters of about 10 in (25 cm).
Industry:Mining
A highly pleochroic variety of clinopyroxene found in the Caucasus Mountains, Russia.
Industry:Mining
