10 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
Gublin bat
Mining; General mining
A black, fissible substance, an iron ore, in which a bituminous shivery earth abounds.
Sooty chalcocite
Mining; General mining
A black, pulverent variety of chalcocite of supergene origin.
Sheet sand
Mining; General mining
A blanket deposit of sand or sandstone of unusually wide distribution, typically an orthoquartzitic sandstone deposited by a transgressive sea advancing for a considerable distance over a stable ...
Windy shot
Mining; General mining
A blast in a coal mine which--due to improperly placed charges, the wrong kind or quantity of explosives, or insufficient stemming--expends most of its force on the mine air; it sometimes ignites a ...
Propagated blast
Mining; General mining
A blast consisting of a number of unprimed charges of explosives and only one hole primed, generally for the purpose of ditching, where each charge is detonated by the explosion of the adjacent one, ...
Blanket sandstone
Mining; General mining
A blanket deposit of sand or sandstone of unusually wide distribution, typically an orthoquartzitic sandstone deposited by a transgressive sea advancing for a considerable distance over a stable ...
Squib shot
Mining; General mining
A blast with a small quantity of high explosives fired at some point in a borehole for the purpose of dislodging some foreign material that has fallen into it.
