An analysis of roof-pillar-weak floor interaction in partial extraction room and pillar mining.
By: W. M. Pytel and Y. P. Chugh.
Contributors: Chugh, Yoginder P.
Publisher: s.n
Published: 1989
Place of publication: S.l
Notes: Pages 621-628 in a. W. Khair (ed). Rocky Mechanics as a Guide for Efficient Utilization of natural Resources, Proc. 30th US Symp., WV. 1000pp.

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