General

General

General nature or nature terms.

Industry: Natural environment

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General

level

Mining; General

Horizontal passageways or tunnels in the mine leading from shafts, established at regular intervals.

lode

Mining; General

an ore deposit occurring in place within definite boundaries separating it from the adjoining rocks.

metamorphism

Mining; General

A pronounced change in the constitution of rock effected by pressure, heat, and water that results in a more compact and more highly crystalline condition.

mineral

Mining; General

A substance which may, or may not, be of economic value, that occurs naturally in the earth. It is homogenous, has certain chemical makeup and usually appears in crystal or grain form.