20 Terms
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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
Mould
Mining; General mining
A body of moulding sand or other heat-resisting material containing a cavity which when filled with molten metal yields a casting of the desired shape.
Pluton
Mining; General mining
A body of medium- to coarse-grained igneous rock that formed beneath the surface by crystallisation of a magma.
Standing gas
Mining; General mining
A body of combustible gases known to exist in a mine, but not in circulation; sometimes fenced off.
Asthenolith
Mining; General mining
A body of magma that was formed by melting in response to heat generated by radioactive disintegration.
Sand mould
Mining; General mining
A body of sand and binder surrounding a cavity for the reception of molten metal in the production of castings. The cavity must have dimensional accuracy, and the sand surrounding it must be of ...
Chronolithologic unit
Mining; General mining
A body of rock established to serve as the material reference for all rocks formed during the same span of time. Each of its boundaries is synchronous. Chronostratigraphic units in order of ...
Time-rock unit
Mining; General mining
A body of rock established to serve as the material reference for all rocks formed during the same span of time. Each of its boundaries is synchronous. Chronostratigraphic units in order of ...
