Crossword Genius

Sack not quite dry, a horror of mine (8)

Ross

I believe the answer is:

firedamp

'a horror of mine' is the definition.
(mining hazard)

'sack not quite dry' is the wordplay.
'sack' becomes 'fire' (both can mean to dismiss from a job).
'not quite dry' becomes 'damp' (I've seen this in another clue).
'fire'+'damp'='FIREDAMP'

(Other definitions for firedamp that I've seen before include "Methane in coalmines" , "dangerously explosive" , "a particular horror of mine" , "Explosive gas in mines" , "Combustible mixture" .)

I've seen this clue in The Times.
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