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

mobile belt

Mining; General mining

An elongated zone of the Earth's crust subjected to relatively great structural deformation. Compare: geosyncline

submarine canyon

Mining; General mining

An elongated, steep-walled cleft running across or partially across the Continental Shelf, the continental borderland and/or slope, the bottom of which grades continually downwards.

Schone's apparatus

Mining; General mining

An elutriator consisting of a tall glass vessel tapering toward the bottom, where water enters at a constant rate. Schone's formula is: V = 104.7 (S1) 1.57 D 1.57 where V is the velocity of water ...

soffioni

Mining; General mining

An emanation, from the Earth, of vapors that are principally boric acid; also, the opening from which the vapors issue.

levee

Mining; General mining

An embankment beside a river or an arm of the sea, to prevent overflow.

Walton filter

Mining; General mining

An emerald glass or beryloscope mounted to resemble a hand loupe. Observed through it the filament of an incandescent lamp appears reddish yellow, and this color is not changed when also passing ...

emerald loupe

Mining; General mining

An emerald glass or beryloscope mounted to resemble a hand loupe. Observed through it the filament of an incandescent lamp appears reddish yellow, and this color is not changed when also passing ...