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
Add a new termContributors in Mineral mining
Mineral mining
Expansion bolt
Mining; General mining
A bolt equipped with a split casing that acts as a wedge; used for attaching to brick or concrete.
Turn bolt
Mining; General mining
A bolt turned in a lathe to a close tolerance and used in steel-to-steel connections.
Expansion cutter
Mining; General mining
A borehole drill bit having cutters that may be expanded to cut a larger size hole than the size of the bit in its unexpanded state; also, a device equipped with cutters that may be expanded inside ...
Corrosion border
Mining; General mining
A border of secondary minerals, produced by partial resorption and recrystallization, surrounding an original crystal constituent of a rock.
Resorption border
Mining; General mining
A border of secondary minerals, produced by partial resorption and recrystallization, surrounding an original crystal constituent of a rock.
Journal book
Mining; General mining
A book in which the official record of events or the type and characteristics of the rock penetrated by the borehole is entered.
