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

P pachnolite

Mining; General mining

A monoclinic mineral, NaCaAlF 6 .H 2 O ; white; distinct cleavage; dimorphous with thomsenolite; an alteration of cryolite.

A mosaic in which aerial photographs or images have been adjusted, oriented, and scaled to horizontal ground control to provide an accurate representation with respect to distances and distortions. ...

Furnace magnesite

Mining; General mining

A mortar material prepared from finely ground, dead-burned magnesite; suitable for use as a joint material in laying magnesite brick, and for patching or daubing furnace masonry.

Section boss

Mining; General mining

A more or less loosely used term applied to the assistant mine foreman in charge of an area, although used in law in some states in lieu of assistant foreman and certified as such.