5 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
Euosmite
Mining; General mining
A brownish-yellow resin with low oxygen content and a characteristic pleasant odour found in brown coal.
Glessite
Mining; General mining
A brown variety of retinite; sp gr, 1.015 to 1.027; found on the shores of the Baltic Sea.
Miesite
Mining; General mining
A brown variety of pyromorphite containing calcium from Mies, Czech Republic.
Millstone
Mining; General mining
A buhrstone; e.g., a coarse-grained sandstone or a fine-grained quartz conglomerate. Also, one of two thick discs of such material used for grinding grain and other materials fed through a centre ...
Centrifugal discharge elevator bucket
Mining; General mining
A bucket designed to scoop material from the boot of an elevator and discharge by reason of the combined effect of centrifugal force and gravity.
Drag bucket
Mining; General mining
A bucket widely used in sampling sea-floor rock deposits in all depths up to and exceeding 30,000 ft (9.1 km).
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