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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
Solution cavity
Mining; General mining
A cavity formed in certain rocks in which percolating sollutions have filled with valuable minerals; cavities formed in certain rocks, such as limestones, where portions have been dissolved by ...
Crop fall
Mining; General mining
A caving in of the surface at the outcrop of the bed; caused by mining operations. Applied also to falls occurring at points not on the outcrop of the bed. Synonymous with day fall.
Genus
Mining; General mining
A category in the hierarchy of plant and animal classification intermediate in rank between family and species. Adj: generic. Plural: genera.
Saltpetre earth
Mining; General mining
A cave in which the earth fill contains appreciable quantities of nitrates; once mined commercially.
Saltpetre cave
Mining; General mining
A cave in which the earth fill contains appreciable quantities of nitrates; once mined commercially.
Caustophytolith
Mining; General mining
A caustobiolith formed by the direct accumulation of vegetal matter; e.g., peat, lignite, and coal.
Sand holder
Mining; General mining
A cavity in a pump barrel to catch sand and keep it out of the way of the plunger or buckets.
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