afterdamp

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Related to After damp: White damp, Fire damp, Black damp

afterdamp:

see dampdamp,
in mining, any mixture of gases in an underground mine, especially oxygen-deficient or noxious gases. The term damp probably is derived from the German dampf, meaning fog or vapor. Several distinct types of damp are recognized.
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afterdamp

[′af·tər‚damp]
(mining engineering)
The mixture of gases which remains in a mine after a mine fire or an explosion of firedamp.

afterdamp

a poisonous mixture of gases containing carbon dioxide, carbon monoxide, and nitrogen formed after the explosion of firedamp in coal mines
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