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

stationary engine

Mining; General mining

An engine located on a fixed foundation, as distinguished from a portable engine.

An engineer in charge of all electrical plant and associated labor at a mine or colliery. He or she has an assistant in charge of all the underground electrical equipment, operations, and labor. The ...

combustion engineer

Mining; General mining

An engineer with practical training and knowledge of all kinds of fuels and their combustion characteristics. In general, the engineer lacks the technical qualifications of the fuel technologist.

peldon

Mining; General mining

An English term for a very hard, smooth compact sandstone with conchoidal fracture that occurs in coal measures.

post stone

Mining; General mining

An English term for any fine-grained sandstone or limestone. Also spelled: poststone.

marl slate

Mining; General mining

An English term for calcareous shale; it is not a true slate.

chog

Mining; General mining

An English term for chocks, or blocks spiked into the corner of a shaft to form a bearing for the side-walling piece, or the blocks used in headings to separate the cap and poling board.