20 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
Split bushing
Mining; General mining
A bushing made in two pieces, for ease of insertion and removal.
Tower excavator
Mining; General mining
A cableway excavator designed specif. for levee work, but which is used extensively in the stripping of overburden, spoil, or waste in surface mining. The unit is basically an excavator with towers ...
Bitumen cable
Mining; General mining
A cable notable for its resistance to moisture, but not suitable for high temperatures. The wires are tinned to prevent reaction with the sulphur in the bitumen. Outside the bitumen are layers of ...
Luffing cableway mast
Mining; General mining
A cableway tower hinged at the base and sustained by adjustable guys so that its inclination can be varied.
Shaft feeder cable
Mining; General mining
A cable mounted in a shaft to transmit electrical power to the shaft bottom and/or to an intermediate level.
