- المجال: 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 slot enlarged at one end to allow entrance of a chain or bolt that can then be held by the narrow end.
Industry:Mining
A slot or groove made horizontally or vertically in a coal seam by a coal cutter, as a preliminary step to shot firing.
Industry:Mining
A slowly rotating cylindrical vessel that separates run-of-mine coal into clean coal, middlings, and refuse. It consists of different and adjustable specific gravities. The low gravity medium in one compartment separates a primary float product (clean coal), the sink material being lifted and sluiced into the second compartment where middlings and true sinks (stone) are separated.
Industry:Mining
A slow-setting, rapid-hardening cement containing 40% lime, 40% alumina, 10% silica, and 10% impurities; used in cementing drill holes. Sometimes called bauxite cement.
Industry:Mining
A slow-speed roller mill of the Chilean type. A horizontal spider carrying six rollers revolves slowly in a pan 10 ft (3 m) or more in diameter, making about 8 rpm.
Industry:Mining
A sluice box placed to receive the material rejected from the tables of a dredge.
Industry:Mining
A sluice formed in five or six tight spirals, in which centrifugal force aids the separating effect of sluice action.
Industry:Mining
A sluice in which coarse blankets are laid to catch the fine but heavy particles of gold, amalgam, etc., in the slime passing over them. The blankets are removed and washed from time to time to obtain the precious metal.
Industry:Mining
