Colliery (but not yours!) (4)
I believe the answer is:
mine
(Other definitions for mine that I've seen before include "Coal supplier" , "Pit; belonging to me" , "Explosive device - belonging to me" , "Source of ore belongs to me" , "I made?" .)
I believe the answer is:
mine
(Other definitions for mine that I've seen before include "Coal supplier" , "Pit; belonging to me" , "Explosive device - belonging to me" , "Source of ore belongs to me" , "I made?" .)