Extracted material to be brought up (5)
I believe the answer is:
mined
'extracted' is the definition.
(to mine is to extract something from a mine)
'material to be brought up' is the wordplay.
'material' becomes 'denim' (type of fabric).
'to be brought up' shows that the letters should be reversed in order (in a down clue, letters go up).
'denim' reversed gives 'MINED'.
(Other definitions for mined that I've seen before include "Sought diamonds?" , "Booby-trapped; dug ores from" , "Placed charges" , "proceeded secretly" , "Dug for minerals, say coal" .)