- Industry: 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 ...
Minerals, usually monomineralic aggregates, which are found in detached masses, the forms being sometimes spherical, sometimes irregular, e.g., flint.
Industry:Mining
Miner's term for part of a fossil tree trunk, such as Lepidodendron or Sigillaria, with a leaf-scar pattern suggesting scales.
Industry:Mining
Miners' term for picrolite (antigorite), a mineral associated in places with chrysotile asbestos.
Industry:Mining
Mines create special problems in proper ventilation by their isolation from fresh air sources, and the presence of dangerous gases and dusts. Large fans are used for the stationary systems, while small portable types provide fresh air in dead-ends and other 1997 inaccessible locations. These fans may be driven by electricity or compressed air, and in addition to mine operations, are useful for work in manholes, pipe galleries, silos, tanks, vats, plane fuselages, ship holds, etc. The Mine Safety and Health Administration, Department of Labor can furnish specific recommendations concerning special problems.
Industry:Mining
Mines or areas that are connected underground shall be considered as a single mine if the underground connections between previously separate mines or areas subject the workers in the respective mines or areas to a reasonable likelihood of danger from mine fires or the products of fires, explosions or the forces and products of explosions, mine inundations, or personnel accidents.
Industry:Mining
Mineworker who lines the galleries and other rooms with masonry, works on the repair of mine supports, and builds ventilation doors and dams.
Industry:Mining
Miniature belt conveyor, on which small ore particles move singly past a Geiger-Mueller tube that is set to operate a sorting device. This removes from the passing stream each 1747 particle of radioactive ore that reaches the required intensity, therefore sorting out the valuable material.
Industry:Mining
Miniature pneumatic flotation cell, operated by hand. Widely used in ore testing, for examination of small samples under closely controllable conditions of flotation.
Industry:Mining
Minimum recommended distance between explosive materials and other materials or specific locations.
Industry:Mining
