Mineral mining

Mineral mining

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

Industry: Mining

Contributors in Mineral mining

Mineral mining

A body of clay, usually roughly tabular in form like an ore vein, that fills a crevice in a coal seam. It is believed to have originated where the pressure was high enough to force 616 clay from the ...

Magnetised

Mining; General mining

A body is said to be magnetised when it possesses or can be made to possess that peculiar property whereby, under certain circumstances, it will naturally attract or repel a similar body in ...

Neutral equilibrium

Mining; General mining

A body is said to be in neutral equilibrium if on being slightly displaced it remains in its new position; e.g., a ball placed on a horizontal surface or a cone supported on its side on a horizontal ...

Cheque board

Mining; General mining

A board usually posted at the entrance to a mine or to a section of a mine on which (1) miners hang their identification cheques to show whether they are in or out, or (2) the miners' loading cheques ...

Finger board

Mining; General mining

A board with projecting dowels or pipe fingers located in the upper part of the drill derrick or tripod to support stands of drill rod, drill pipe, or casing. Compare: finger.