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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 
Liqnipel process
Mining; General mining
A process for reducing high-moisture-content lignite from up to 40% moisture to about 10% moisture by pulverizing the raw coal, pelletizing the 14-mesh top size, thermally drying, ...
Roesler process
Mining; General mining
A process for separating copper, and in part silver, from gold by fusing with sulfur or with antimony sulfide, obtaining copper or silver sulfide.
Pattinson process
Mining; General mining
A process for separating silver from lead in which the molten lead is slowly cooled, so that crystals poorer in silver solifidy out and are removed, leaving the melt richer in ...
Orford process
Mining; General mining
A process for separating the copper and nickel in the matte obtained by Bessemerizing. The matte, which consists of copper-nickel sulfides, is fused with sodium sulfide, and a ...
chemical soil consolidation
Mining; General mining
A process for sinking through loose, heavily watered ground. A gel-forming chemical is injected into the loose material that is eventually consolidated. The time delay in the gel ...
Norsk-Staal process
Mining; General mining
A process for the direct production of iron sponge. A mixture of carbon monoxide and hydrogen is used as the reducing agent. The equipment consists of three vertical ovens, for ...
contact metamorphism
Mining; General mining
A process taking place in rocks at or near their contact with a body of igneous rock. Metamorphic changes are effected by the heat and materials emanating from the magma and by ...
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)