Mineral mining

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

Kalling's solution

Mining; General mining

An etching reagent for developing the microstructure of chromium steels with more than 5% of chromium. It contains 5 g copper chloride, 100 mL hydrochloric acid, 100 mL alcohol, and 100 mL water.

An etching reagent that reveals not only the macrostructure and faults, such as piping, segregation, particularly sulfur and phosphorus, and cracks, but also slip lines in mild steel that has been ...

Stead's reagent

Mining; General mining

An etching reagent, used in metallographic examination of steels, containing 100 mL methyl alcohol, 18 mL water, 2 mL concentrated hydrochloric acid, 1 g copper chloride, and 4 g magnesium chloride.

environmental audit

Mining; General mining

An evaluation of environmental conditions at a particular facility or site. Major items that could be relevant to an environmental audit for a mining facility may include information on permits, ...

salting evaporator

Mining; General mining

An evaporator that produces crystals or other solids, in distinction to one that only concentrates liquids.

oolitic limestone

Mining; General mining

An even-textured limestone composed almost wholly of relatively uniform calcareous ooliths, with virtually no interstitial material. It is locally an important oil reservoir (such as the Smackover ...

power shovel

Mining; General mining

An excavating and loading machine consisting of a digging bucket at the end of an arm suspended from a boom, which extends cranelike from the part of the machine that houses the powerplant. When ...