- 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 large, high-powered locomotive that hauls trains of cars over the main haulage system.
Industry:Mining
A large, massive piece of floating or stranded glacier ice of any shape, detached (calved) from the front of a glacier into a body of water. An iceberg extends more than 5 m above sea level and has the greater part of its mass (four-fifths to eight-ninths) below sea level. It may reach a length of more than 80 km.
Industry:Mining
A large, persistent lode. At Alston moor, England, applied to lodes lying in a fault plane in which the difference of level between similar strata is considerable.
Industry:Mining
A large, shallow basin or pond where seawater is evaporated by solar heat.
Industry:Mining
A large-capacity machine for excavating loose deposits, particularly at opencast coalpits. It consists of a large digging wheel that rotates on a horizontal axle and carries large buckets on its rim.
Industry:Mining
A large-capacity screening or sorting appliance for coal or ore. It consists of a series of heavy metal bars arranged side by side and spaced at a definite distance apart. The bars are set at an angle so that material delivered at the upper end will just slide, and chutes are arranged to receive oversize at the lower end and undersize passing between the bars. The stationary bar screen is still used at many small mines.
Industry:Mining
A large-diameter drill with multiple rotary cones or cutting bits used for shaft sinking. An adaptation from oil well drills.
Industry:Mining
A large-scale basin in which sedimentation has occurred or is taking place, as distinguished from a tectonic basin due to folding of preexisting rocks; e.g., the Anglo- Parisian cuvette of Southeast England and Northeast France, in which Cenozoic rocks accumulated and were later folded into several distinct but smaller basins, such as the London Basin and the Paris Basin. Etymol: French, small tub or vat. Sometimes misspelled curvette.
Industry:Mining
