Crossword Genius

Explosive ingredient: colonel rules it must be deployed (14)

Ross

I believe the answer is:

nitrocellulose

'explosive ingredient' is the definition.
(I know that nitrocellulose is a type of explosive ingredient)

'colonel rules it must be deployed' is the wordplay.
'must be deployed' indicates anagramming the letters.
'colonel'+'rules'+'it'='colonelrulesit'
'colonelrulesit' anagrammed gives 'NITROCELLULOSE'.

I've seen this clue in The Times.
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