- Industry: Mining
- Number of terms: 33118
- Number of blossaries: 0
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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 ...
The floating of lighter-weight crystals in a body of magma. Compare: crystal settling
Industry:Mining
The floor or bottom of the internal cross section of a closed conduit, such as an aqueduct, tunnel, or drain. The term originally referred to the inverted arch used to form the bottom of a masonry-lined sewer or tunnel.
Industry:Mining
The flow of a fluid into a solid substance through pores or small openings; specif. the movement of water into soil or porous rock. Compare: percolation
Industry:Mining
The fluid pumped through and to the end of the drill string and back to the surface in the process of drilling a borehole. Compare: drilling mud
Industry:Mining
The flushing or slicing of coal or other material broken down by water jets along the floor and into flumes. Coal will flow back toward the flume if sufficient water is available and the gradient is not less than 6 degrees to 7 degrees in favor of the flow. Flexible low-pressure hoses (150 to 200 psi or 1.0 to 1.4 MPa) are sometimes used to assist in the flushing operations.
Industry:Mining
The foliation in schist or other coarse-grained, crystalline rock due to the parallel, planar arrangement of mineral grains of the platy, prismatic, or ellipsoidal types, usually mica. It is considered by some to be a type of cleavage. Adj: schistose.
Industry:Mining
The follower rail of a mine switch is the rail on the other side of the turnout corresponding to the lead rail.
Industry:Mining
The following explains the National Fire Protection Association classifications. Class A fires are defined as those in ordinary solid, combustible materials, such as coal, wood, rubber, textiles, paper, and rubbish. Class B fires are defined as those in flammable liquids, such as fuel or lubricating oils, grease, paint, varnish, and lacquer. Class C fires are defined as those in (live) electric equipment, such as oil-filled transformers, generators, motors, switch panels, circuit breakers, insulated electrical conductors, and other electrical devices.
Industry:Mining
