000 00798 a2200253 4500
001 137081
020 _a0
041 _aeng
080 _a622.271 Sym:70
245 _aPlanning open pit mines : proceedings of the symposium on the theoretical background to the planning of open pit mines with special reference to slope stability, Johannesburg, 29 Aug.-4 Sept., 1970 / edited by P.W.J. Van Rensburg
250 _a
260 _aCape Twon
260 _b: A.A. Blakema, n.d.
260 _c
300 _axvi,388 p.
300 _c29 cm
490 _a
100 _aSymposium on the theoretical background to the planning of open pit mines with special reference to slope stability (1970 : Johannesburg)
700 _a
650 _a
650 _aStrip mining
942 _cBK
942 _2UDC
999 _c58409
_d58409