- 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 ...
The belt of marine deposits composed largely of detrital clay, and lying between the coarser terrigenous sediments to the landward and the deep oceanic organic oozes on the seaward side. At present, the inner boundary of the inner mud belt is the edge of the continental shelf.
Industry:Mining
The belt on which coal or ore is transported to the discharge point. The carrying belt is the upper strand except in the case of a bottom belt conveyor.
Industry:Mining
The bench to one side of the drill tripod or derrick floor where visitors and workers can sit while observing the drilling operation.
Industry:Mining
The benchlike feature bordering an elevation of the deep-sea floor at depths greater than 300 fathoms (1,800 ft or 549 m).
Industry:Mining
The bending down or settling of part of the Earth's crust in the form of a basin, as by rock deformation or by solution of underground deposits of salt or gypsum.
Industry:Mining
The bending of the conveyor belt that takes place as it wraps around the pulleys. The ply nearest the face of the pulley is under the minimum stress and the ply farthest from the face is under the maximum stress. Flexing stresses increase with a decrease in pulley diameters.
Industry:Mining
The bevel gear mounted on the outside of the drive quill in the swivel head of hydraulicfeed and/or some types of gear-feed diamond drills. The gear meshes with, and is driven by, a matching gear on the drill-motor shaft.
Industry:Mining
The binding of coal dust on roadway surfaces to prevent it becoming airborne by any disturbance. One method is to spread calcium chloride over the dust so that it absorbs water and forms a pasty cake that does not rise into suspension when workers travel on the roadway.
Industry:Mining
The bits and other bottom-hole tools and equipment used to drill boreholes by percussive action, using a rope, instead of rods, to connect the drilling bit with the machine on the surface.
Industry:Mining
