Elongate mine support

Details Elongate mine support Elongate mine support

E - Fixed Constructions

21

D

61/66

E21D 15/02 (2006.01) E21D 15/14 (2006.01)

Patent

CA 1231843

A B S T A C T A elongate mine support comprising a timber pole with a metal sleeve reinforcement therearound has circumferential weaknesses in the sleeve for assisting controlled collapse of the sleeve when the support is under azial load.

465377

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