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Mineral mining
The extraction of valuable minerals or other geological materials from the earth for economic interests.
Industry: Mining
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Mineral mining
water turbine
Mining; General mining
A prime mover coupled to an alternator, using a purely rotary motion to generate an alternating current. The main types of water turbines are (1) the Pelton wheel for high heads, (2) the Francis ...
trilobite
Mining; General mining
A primitive, extinct crustacean, occurring throughout the Paleozoic and abundant in the earlier Paleozoic periods, characterized by a segmented body divided by longitudinal grooves into three lobes.
pioneer road
Mining; General mining
A primitive, temporary road built along the route of a job, to provide means for moving equipment and workers.
polarizing prism
Mining; General mining
A prism of an anisotropic crystal, commonly calcite, cut and cemented together so as to permit passage of one of the doubly refracted light rays while reflecting the other out of the train of a ...
Nicol prism
Mining; General mining
A prism of an anisotropic crystal, commonly calcite, cut and cemented together so as to permit passage of one of the doubly refracted light rays while reflecting the other out of the train of a ...
release analysis
Mining; General mining
A procedure employed to determine the best results possible in cleaning a coal by froth flotation.
drill-stem test
Mining; General mining
A procedure for determining the potential productivity of an oil or gas reservoir by measuring reservoir pressures and flow capacities while the drill pipe is still in the hole, the well is still ...
