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

automatic sampler

Mining; General mining

An instrument designed to take samples of mine gases or water at predetermined times or intervals.

galvanoscope

Mining; General mining

An instrument employed for detecting an electric current and showing its direction. It differs from a galvanometer in being only qualitative.

twinoscope

Mining; General mining

An instrument employing a directed beam of light used to examine etched wafers for twinning.

Orsat gas-analysis instrument

Mining; General mining

An instrument for analyzing flue gases. Although outside its normal field of application, it may be used for analyzing mine air.

An instrument for analyzing gases and vapors from liquids with boiling points up to 300 degrees C. The gas chromatograph often arranges the molecules of a gas in increasing size, and as each group ...

aerometer

Mining; General mining

An instrument for ascertaining the weight or the density of air or other gases.

wet sphere device

Mining; General mining

An instrument for assessing climatic conditions in mines, such as wet- and dry-bulb temperatures, air velocity, barometric pressure, and radiation. The field of usefulness of the instrument is ...