Abstract: A rock pass bored in rock is lined with cylinders 10 which are stacked one on top of the other. The liners are lined in those parts which are subject to wear with detachable liners 15. The remainder carries rails 14 as a protection against rebound.
Type:
Grant
Filed:
June 6, 1980
Date of Patent:
February 1, 1983
Assignee:
Gold Fields Mining and Development Limited