Underground rock chutes

Details Underground rock chutes Underground rock chutes

E - Fixed Constructions

21

D

61/60

E21D 11/14 (2006.01) E21D 5/06 (2006.01) E21D 9/02 (2006.01)

Patent

CA 1138213

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.

353893

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