Geotechnical stability in surface mining : proceedings of the International Symposium on Geotechnical Stability in Surface Mining / Calgary - 6-7 November 1986 / edited by Raj. K. Singhal - Rotterdam : A. A. Balkema, 1986 - 411 p. : ill. ; 26 cm. ISBN: 9061916879 Subjects--Topical Terms: Strip mining--CongressesSlopes (Soil mechanics)--Congresses