- 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 uncontrolled downward rush of trams when the haulage rope breaks or becomes detached while the set is being hauled up an incline.
Industry:Mining
The underground use of tractors and dump truck haulage, of battery or diesel type, and battery-driven shuttle cars.
Industry:Mining
The underwater end of a hydraulic dredging system that comes in contact with bottom sediments and through which a dredge pump recovers a slurry of water and sediment.
Industry:Mining
The uneven settling of homogeneous earth material under the influence of gravity (as where thick sediments in depressions settle more rapidly than thinner sediments on hilltops) or by differing degrees of compactability of sediments (as where clay loses more interstitial water and comes to occupy less volume than sand).
Industry:Mining
The uneven upward movement, and general distortion, of soils, rocks, vegetation, and structures such as pavements, due to subsurface freezing of water and growth of ice masses (esp. ice lenses); any upheaval of ground caused by freezing.
Industry:Mining
The unexcavated face of exposed overburden and coal or ore in an opencast mine, or the face or bank on the uphill side of a contour strip mine excavation.
Industry:Mining
The uniform depth to which water would cover the Earth if the solid surface were smoothed off and parallel to the surface of the geoid. Generally accepted as a depth of 2,440 m.
Industry:Mining
The unit amount of spoil or overburden that must be removed to gain access to a unit amount of ore or mineral material, generally expressed in cubic yards of overburden to raw tons of mineral material.
Industry:Mining
