- 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 ...
A row of timbers erected for the purpose of breaking the roof in pillar mining.
Industry:Mining
A royalty or percentage of the gross income from production deducted from the working interest.
Industry:Mining
A rubber belt consisting of spaced cotton duck cords embedded in the rubber and protected at the top by a breaker strip with thick rubber cover. The bottom of the belt contains one or two plies of heavy duct, to give transverse strength.
Industry:Mining
A rubber belt containing nylon fiber reinforcing. It is stronger than cotton-duck belts of equivalent size and possesses better troughability and fastener holding strength. Nylon belt has the advantage of a long flex life, and the thinner carcass means easier bending.
Industry:Mining
A rubber conveyor belt in which the carcass is composed of a single plane of steel cables that acts as a longitudinal tension-carrying member and includes two or more plies of fabric to provide transverse strength and hold the cables together.
Industry:Mining
A rubber that has been heated with sulfur to change its properties.
Industry:Mining
A rubber-ball-type check valve, generally placed near the bottom of a long string of casing. Its use reduces the load imposed on the hoisting mechanism in lowering casing into a wet borehole.
Industry:Mining
A rubber-ball-type check valve, generally placed near the bottom of a long string of casing. Its use reduces the load imposed on the hoisting mechanism in lowering casing into a wet borehole.
Industry:Mining
A rubber-ball-type check valve, generally placed near the bottom of a long string of casing. Its use reduces the load imposed on the hoisting mechanism in lowering casing into a wet borehole.
Industry:Mining