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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 > Gold mining

refractory material

Mining; General mining

Gold mineralized material in which the gold is not amenable to recovery by conventional cyanidation without any pre-treatment. The refractory nature can be either silica or ...


Mining; Gold mining

The technique of using mercury to attract small particles of crushed gold and join with them in an amalgam, or alloy. Gold may be recovered by distilling off the mercury.


Mining; Gold mining

A scam that used to be common, where conmen would plant gold ore or gemstones into part of a mine, so that marks would find them and believe the land or the mining operation to be ...

greenhouse effect

Mining; Gold mining

The natural phenomenon that occurs when certain atmospheric gases (see greenhouse gases) trap radiated heat in the atmosphere. The greenhouse effect keeps the atmosphere warm and ...


Mining; Gold mining

Surface mining method which utilizes a sloping wooden trough or a ditch cut in hard gravel or rock as a channel, along which gold-bearing sediment is carried by a stream of water. ...


Mining; Diamond mining

Process of surface mining which involves digging and sifting through mud, sand and gravel using shovels and sieves. Alluvial deposits refer to sediment which is transported and ...


Mining; Gold mining

A hole that is drilled into the earth, as in exploratory well drilling or in building construction.