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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

Wracking force

Mining; General mining

A horizontal force tending to distort a rectangular shape into a parallelogram.

Ore zone

Mining; General mining

A horizon in which ore minerals are known to occur.

Level crosscut

Mining; General mining

A horizontal crosscut.

Whaler

Mining; General mining

A horizontal beam in a bracing structure.

Lode plot

Mining; General mining

A horizontal lode.

Copper pitch

Mining; General mining

A jet black to brownish pitchlike material carrying from 12.12% to 84.22% CuO and found in the oxidised zone. It has a conchoidal fracture, and where it occurs in large enough pieces may resemble ...

Single-toggle jaw crusher

Mining; General mining

A jaw crusher with one jaw fixed, the other jaw oscillating through an eccentric mounted near its top. This type of jaw crusher has a relatively high output, and the product is of fairly uniform ...

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