2 Terms
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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
Haulage stage
Mining; General mining
A mine roadway along which a load is moved by a single form of haulage without coupling or uncoupling of cars and without transfer from one form of haulage to another.
Haulage stage
Mining; General mining
A mine roadway along which a load is moved by a single form of haulage without coupling or uncoupling of cars and without transfer from one form of haulage to another.
Sprag road
Mining; General mining
A mine road having such a sharp grade that sprags are needed to control the descent of a car; hence, two-, three-, or four-sprag road.
Sprag road
Mining; General mining
A mine road having such a sharp grade that sprags are needed to control the descent of a car; hence, two-, three-, or four-sprag road.
Working pit
Mining; General mining
A mine shaft through which ore and miners are carried, as distinguished from one used only in pumping.
Splint coal
Mining; General mining
A miner's term long used in Eastern United States and Scotland for certain hard dull coals with a distinctive type of fracture. Splint coals are irregular and blocky, with an uneven rough fracture, ...
