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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
nigritite
Mining; General mining
A product of the coalification of fix bitumens rich in carbon; insoluble or only slightly soluble in organic solvents. It is subdivided into polynigritite, humonigritite, ...
effective breaking force
Mining; General mining
A product of the weight, strength and the degree of packing, calculated per volume of a given drill hole.
yellow ozokerine
Mining; General mining
A product resembling vaseline, but less homogeneous; produced from crude ozokerite.
scarcement
Mining; General mining
A projecting ledge of rock, left in a shaft as footing for a ladder or to support pitwork.
tenon
Mining; General mining
A projecting tongue fitting into a corresponding cavity called a mortise.
inselberg
Mining; General mining
A prominent isolated residual knob, hill, or small mountain rising abruptly from an extensive erosion surface in a hot, dry region (as in the deserts of southern Africa or ...
hydraulic prop
Mining; General mining
A prop consisting of two telescoping steel cylinders that are extended by hydraulic pressure that may be provided by a hand-operated pump built into the prop. The prop holds about ...
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)