- 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 device for automatically cutting off the power from the hoist motor and causing the brake to be set in case the links in the brake rigging require tightening or the brakes require relining.
Industry:Mining
A device for bringing a derailed wagon back onto the track. It usually consists of ramp elements, which can be fixed at intervals along the track or temporarily fitted to the track just beyond the end of the wagon. The wagon is then pulled to cause the wheels to ride up the ramp and back on to the rails.
Industry:Mining
A device for classification by centrifugal means of fine particles suspended in water, whereby the coarser grains collect at and are discharged from the apex of the vessel, 835 while the finer particles are eliminated with the bulk of the water at the discharge orifice.
Industry:Mining
A device for cleaning raw coal which uses the difference in the coefficient of resilience or friction between clean coal and an inclined plate, commonly of steel, and that between refuse and the plate to allow the clean coal to jump over a gap while the refuse falls through.
Industry:Mining
A device for clutching a traction cable between grooved sheaves or rollers.
Industry:Mining
A device for collecting all the drill cuttings from a given interval of borehole.
Industry:Mining
A device for complete shutoff or control of gravity-impelled flow of materials from a bin, bunker, hopper, or other container.
Industry:Mining
A device for complete shutoff or control of gravity-impelled flow of materials from a bin, bunker, hopper, or other container.
Industry:Mining
A device for complete shutoff or control of gravity-impelled flow of materials from a bin, bunker, hopper, or other container.
Industry:Mining
A device for controlling dust carried by loaded conveyors. A liquid medium is sprayed on the conveyor load only when moving and not when stationary, or when the belt is running unloaded. The spray control is placed centrally beneath the conveyor belt and a 200 load causes the belt to deflect and rotate the driving pulley, which causes the controller valve to open. A belt stoppage or no load causes the valve to close.
Industry:Mining
