- 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 spring whose water temperature is appreciably higher than the local mean annual atmospheric temperature.
Industry:Mining
A spring, the water from which issues under artesian pressure, generally through some fissure or other opening in the confining bed that overlies the aquifer.
Industry:Mining
A spring-tensioned aluminum pole (of two sections) with a holder to hold a flashlight in a horizontal position with an adjustable screw aligned with the push button switch of the flashlight. If there is conversion of the mine roof (back), the adjustment screw will depress, putting on the light to warn a miner in the area. Sometimes accompanied by a conversion gauge (measures in thousandths).
Industry:Mining
A sprocket with a split tapered bushing for rigid mounting on a shaft.
Industry:Mining
A spur that projected into a preglacial valley and was partially worn away or beveled by a moving glacier as it widened and straightened the valley.
Industry:Mining
A square funnel forming one of a series of gradually increasing size; for separating metal-bearing slimes according to fineness.
Industry:Mining
A stable area marginal to an orogenic belt, toward which the rocks of the belt were thrust or overfolded. Generally the foreland is a continental part of the crust, and is the edge of the craton or platform area.
Industry:Mining
A stacking conveyor system in which material arrives on a conveyor belt and is fed to one or two wing conveyors. This part of the system moves so as to form a long ridge; reclaimed by raking gear that works across the ridge, moving slowly forward and shifting material loosened and blended by the rake action by means of a spiral that pushes it to a reclaiming conveyor at the side of the ridge. Used to stockpile ore, concentrates, and coal.
Industry:Mining
