Dropping a body-filled suitcase down an abandoned mineshaft seemed, on the face of it, fairly straightforward. Since the death of U.K. coalmining industry there were seemingly lots to choose from. Not so, all the main collieries were well secured and to do anything suspicious at them would be risky.
Rufus took some time to research them on the Internet and was pleased to find some smaller ones he could possibly get to without being noticed. A fringe group of colliery 'tourists' had emerged who would provide some cover for his nefarious activity.
He just needed to borrow a car.