- 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 ...
A switch that may be used on winders, or haulages, to cause the power to cut off from the driving motor, or engine, and the brakes to be applied. Such a switch may be: (1) 2224 situated in the headgear and operated by the conveyance, (2) mounted on the automatic contrivance, or (3) operated by the depth or distance indicator.
Industry:Mining
A switch that opens or closes a circuit by the contact of one or more blades between two or more flat surfaces or contact blades.
Industry:Mining
A switch that permits operation of the hoist only in the reverse direction in case of overwind.
Industry:Mining
A switch that permits operation of the hoist only in the reverse direction in case of overwind.
Industry:Mining
A switch that provides shunt protection in blasting circuits between a blast site and the switch used to connect a power source to the blasting circuit.
Industry:Mining
A switch used to connect a power source to a blasting circuit. It is sometimes used to short-circuit the leading wires as a safeguard against premature blasts.
Industry:Mining
A syenite with a large excess of potassium feldspar (microcline, orthoclase) or feldspathoid over sodium feldspar (albite).
Industry:Mining
A symmetrical array of points in direct space; used when comparison is made with the direct lattice.
Industry:Mining
A symmetrical array of points in direct space; used when comparison is made with the direct lattice.
Industry:Mining
