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Mineral mining

The extraction of valuable minerals or other geological materials from the earth for economic interests.

Contributors in Mineral mining

Mineral mining

victualic joint

Mining; General mining

A proprietary pipe joint that allows the pipes to move through several degrees after fixing but yet to remain watertight. This joint is designed to allow about 12 degrees of movement without causing ...

piercing

Mining; General mining

A prospecting method used in soft soil free from stones, in which small drivepipes are used to secure samples of underlying material or to determine the thickness of the soil.

sconce

Mining; General mining

A protecting cover or screen; protection; shelter. A metal cover and holder combined for holding a miner's candle, esp. for hanging on wooden timbers.

knee pad

Mining; General mining

A protective cushion, usually made of sponge rubber, that can be strapped to the miner's knee.

filter-type respirator

Mining; General mining

A protective device that removes dispersoids from the air by physically trapping the particles on the fibrous material of the filter. It offers no protection against gases or vapors, or atmospheres ...

coal barrier

Mining; General mining

A protective pillar of coal.

contact goniometer

Mining; General mining

A protractor for measuring the angles between adjacent crystal faces.

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