Mineral mining

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

Ground wire

Mining; General mining

A bare or insulated cable used to connect the metal frame of a piece of equipment to the mine track or other effective grounding medium.

Barograph

Mining; General mining

A barometer that makes a continuous record of changes in atmospheric pressure. It is usually an aneroid type. See also: barometer.

Dumb barge

Mining; General mining

A barge similar to a hopper barge, frequently used to take dredged material from a dredger to the dumping ground.

Polishing cask

Mining; General mining

A barrel in which grained gunpowder is tumbled with graphite to glaze it.

Torque bar

Mining; General mining

A bar having the function of resisting or absorbing twisting strains.

A barrier of firebricks or an iron-plate chamber filled with water thrown across the furnace at the extreme end of the fire bars to prevent fuel from being carried into the flues and to quicken the ...

Water barrel

Mining; General mining

A barrel-shaped hoppit designed to collect and hoist water from the bottom of a sinking shaft. Water barrels are now obsolete. See also: pneumatic water barrel; sinking pump; water kibble.