30 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
Gang car
Mining; General mining
A car that may be loaded with a block of stone and placed beneath the blades of a gang saw. It is a substitute for the stationary saw bed.
Dextrin
Mining; General mining
A carbohydrate, C 6 H 18 O 5 , hydrolyzed from starch by dilute acids. Used in flotation as depressant.
Hopper car
Mining; General mining
A car for coal, gravel, etc., shaped like a hopper, with an opening to discharge the contents.
Hair copper
Mining; General mining
A capillary variety of cuprite in fine, slender interlacing fibrous crystals.
Hoolamite indicator
Mining; General mining
A carbon monoxide detector consisting essentially of a small glass tube filled with a powdered chemical; when air is drawn through it, if any of the gas is present, the powder will change color, its ...
