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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
oxygen impingement process
Mining; General mining
A process used in steel making in which pure oxygen is blown down onto the bath in a converterlike vessel.
Parkes process
Mining; General mining
A process used to recover precious metals from lead. It is based on the principle that if 1% to 2% of zinc is stirred into molten lead, a compound of zinc with gold and silver separates out and can ...
natural gamma-ray logging
Mining; General mining
A process whereby gamma rays naturally emitted by formations traversed by a borehole are measured. A tool containing a radiation detector is lowered into the borehole and gamma ray measurements are ...
integrated producer
Mining; General mining
A producer of metal who owns mines, smelters, and refineries, and sometimes also fabricating plants.
mixed cements
Mining; General mining
A product obtained by mixing, or blending, either portland, natural, or pozzolana cement with one another or with other inert substances.
alum cake
Mining; General mining
A product of the action of sulfuric acid on clay, consisting chiefly of silica and aluminum sulfate.
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