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United States Bureau of Mines
行业: 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 ...
One in which only part of the severed ore is removed during stoping, the balance being temporarily available as support of workings. Used in steeply dipping lodes with strong walls.
Industry:Mining
One in which rubbing surfaces are pressed together when electric current is passed through a solenoid; also, a braking system that uses magnetic attraction generated by an electromagnet as a braking force.
Industry:Mining
One in which tailings are collected and settled; also, a water-storage dam.
Industry:Mining
One in which the loaded screen is so suspended that it can be caused to swing or rock forward until it is abruptly checked on hitting a stop.
Industry:Mining
One in which the material is not quenched immediately on coming from the solution heat-treat furnace. This allows precipitation to proceed to a point at which mechanical properties and corrosion resistance are lowered.
Industry:Mining
One liable to further movement. Compare: passive fault
Industry:Mining
One lined with acid refractories.
Industry:Mining
One microhm equals 10<sub>-6</sub>Omega , which equals 10<sub>3</sub>electromagnetic units. Symbol, mu Omega .
Industry:Mining
One mile (1.6 km) traversed by one train; used as a unit in railroad accounting.
Industry:Mining
One nautical mile or knot equals 6,080.20 ft (1,853.248 m); 3 nmi equal 1 league; and 60 nmi equal 1 degree of longitude (at the equator).
Industry:Mining
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