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

terroite

Mining; General mining

An extra-strong high explosive of the nitroglycerin type.

An extremely attenuate pyroclastic rock consisting of glass threads which join a series of points forming a polyhedral space lattice. It is formed from pumice by the collapse of the walls of adjacent ...

clay

Mining; General mining

An extremely fine-grained natural earthy material composed primarily of hydrous aluminum silicates. It may be a mixture of clay minerals and small amounts of nonclay materials or it may be ...

white iron

Mining; General mining

An extremely hard cast iron, resulting when a casting is chilled in a metallic mold.

oilfield winch

Mining; General mining

An extremely powerful low-speed winch on a crawler tractor.

analcimite

Mining; General mining

An extrusive or hypabyssal igneous rock consisting mainly of analcime and pyroxene (usually titanaugite). Feldspathoids, plagioclase, and/or olivine may be present. Apatite, sphene, and opaque oxides ...

trachybasalt

Mining; General mining

An extrusive rock intermediate in composition between trachyte and basalt, characterized by the presence of both calcic plagioclase and alkali feldspar, along with clinopyroxene, olivine, and ...