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Mining
Of or pertaining to the process or business of extracting materials, such as ore or minerals, from the earth's crust.
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Mining > Mineral mining 
contact process
Mining; General mining
A process for making sulfuric acid. Sulfur dioxide gas (obtained by burning pyrite) is purified by electrical precipitation, and is passed over a catalytic agent to form sulfur ...
Siemens direct process
Mining; General mining
A process for making wrought iron directly from iron ore, without the previous production of pig iron.
lime-soda sinter process
Mining; General mining
A process for manufacturing alumina, Al 2 O 3 . The raw material, such as clay or anorthosite, is sintered with limestone and soda ash to form sodium aluminate and calcium ...
open-hearth process
Mining; General mining
A process for manufacturing steel, either acid or basic, according to the lining of the reverberatory furnace, in which selected pig iron and malleable scrap iron are melted, with ...
Sperry process
Mining; General mining
A process for manufacturing white lead in which softened and desilverized lead anodes, preferably containing some bismuth, are placed in the Sperry cells. Direct current dissolves ...
Talbot process
Mining; General mining
A process for protecting the inside of cast-iron pipes with a coating of sand and bitumen.
MacArthur and Forest cyanide process
Mining; General mining
A process for recovering gold by leaching the pulped gold ore with a solution of 0.2% to 0.8% potassium cyanide, KCN, and then with water. The gold is obtained from this solution ...
Sub-categories
- Coal mining (40)
- Diamond mining (39)
- General mining (41978)
- Gold mining (103)
- Mineral mining (36958)
- Minerals (696)
- Mining tools (94)
- Space mining (40)