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

hydrometrograph

Mining; General mining

An instrument for determining and recording the quantity of water discharged from a pipe, orifice, etc., in a given time.

salinity bridge

Mining; General mining

An instrument for determining salinity of water (a salinometer) by measuring electrical conductivity of the water sample with a wheatstone bridge.

An instrument for determining temperature usually by means of a scale graduated directly in temperature units and consisting typically of (1) a device having a bimetallic element, the expansion or ...

anthracometer

Mining; General mining

An instrument for determining the amount of carbon dioxide in a mixture of gases.

sclerometer

Mining; General mining

An instrument for determining the degree of hardness of a mineral by ascertaining the pressure on a moving diamond point necessary to effect a scratch.

hydrobarometer

Mining; General mining

An instrument for determining the depth of sea water by its pressure.

beta particle

Mining; General mining

An elementary particle emitted from a nucleus during radioactive decay. It has a single electrical charge and a mass equal to 1/1837 that of a proton. A negatively charged beta particle is physically ...