7 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
Cone penetrator
Mining; General mining
A 30 degrees to 60 degrees cone having a basal diameter approx. the same size as an asize diamond-drill rod used to determine the force required to thrust the cone downward into silty or fine to ...
Gravity bar
Mining; General mining
A 5 ft (1.5 m) length of heavy half-round rod forming the link between the wedgeorienting coupling and the drill-rod swivel coupling on an assembled Thompson retrievable borehole-deflecting wedge.
Pottery spar
Mining; General mining
A 200-mesh feldspar produced for use by the manufacturers of chinaware, sanitary ware, ceramic tile, frits, enamel, glazes, electrical insulators, and vitrified grinding wheels.
Boylston's reagent
Mining; General mining
A 5% solution of nitric acid in absolute ethyl or methyl alcohol, used for the general etching of normal carbon steels.
Ammonite
Mining; General mining
A 17th and 18th century term for a sedimentary rock now called oolite.
Ammite
Mining; General mining
A 17th and 18th century term for a sedimentary rock now called oolite.
Liquid dump bailer
Mining; General mining
A bailer used in borehole-cementation work, provided with a valving device that empties the contents of the bailer (cement) at the bottom of a borehole.
