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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
sand seam
Mining; General mining
A quarry term for a more or less minute vein or dike of muscovite (white mica) with some quartz, in cases also with feldspar.
toeing-in
Mining; General mining
A quarry term for the wedging-in of the end of a granite sheet under an overhanging joint, probably in consequence of the faulting of the sheets along the joint. It is also applied to the overlapping ...
stunning
Mining; General mining
A quarry worker's term for the formation of fractures caused by the cutting bars of a channeling machine striking the rock with excessively heavy blows.
pitch off
Mining; General mining
A quarry worker's term for trimming an edge of a block of stone with a hammer and set.
beef
Mining; General mining
A quarry worker's term, used originally in Purbeck, southern England, for thin, flat-lying veins or layers of fibrous calcite, anhydrite, gypsum, halite, or silica, occurring along bedding planes of ...
