Mineral mining

Mineral mining

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

Industry: Mining

Add a new term

Contributors in Mineral mining

Become a Contributors

Mineral mining

chrome

Mining; General mining

A term commonly used to indicate ore of chromium, consisting esp. of the mineral chromite or chromium-bearing minerals, such as chrome mica or chrome diopside.

electrometallurgy

Mining; General mining

A term covering the various electrical processes for the industrial working of metals; e.g., electrodeposition, electrorefining, and operations in electric furnaces.

recirculation of air

Mining; General mining

A term describing a condition in which the ventilating air current is returned to the face repeatedly along a circuitous path. It may happen in the case of auxiliary fans or booster fans. If the ...

statistical uniformity

Mining; General mining

A term describing that variation in quality of materials of manufactured goods that is stable and determinate, so that statistical analysis and prediction can be applied to it.

flameproof

Mining; General mining

A term descriptive of electrical machines, switches, and fittings demanded legally for use in fiery mines in Great Britain. Enclosing boxes with accurately fitted wide flanges are used.

A term encountered in disputes over what constitutes compensable "working time" under Federal laws. Portal literally means "entrance" and, in underground coal mining, portal refers to the mine mouth ...

llano

Mining; General mining

A term for an extensive tropical plain, with or without vegetation, applied esp. to the generally treeless plains of northern South America and the Southwestern United States. Etymol: Spanish.