Material mined a new way (5)
I believe the answer is:
denim
'material' is the definition.
(denim is a kind of material)
'mined a new way' is the wordplay.
'a new way' indicates anagramming the letters.
'mined' with letters rearranged gives 'DENIM'.
(Other definitions for denim that I've seen before include "Coloured cotton twill" , "Fabric used for jeans" , "Mined badly for a hard-wearing fabric" , "Hard-wearing material seen in jeans" , "Durable material" .)