01070cam a22002291a 4500 u6321 SIRSI 20250825175125.0 241018s1970 ne ab r 100|0 eng d clrauoh rda 622.292 20 Symposium on the Theoretical Background to the Planning of Open Pit Mines with Special Reference to Slope Stability (1970 : Johannesburg, Sudáfrica) Planning 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, Republic of South Africa, 29 August - 4 September 1970 / edited by P. W. J. Van Rensburg. Cape Town : South African Institute of Mining and Metallurgy, 1970. xvi, 388 pages : illustrations, maps. text txt rdacontent unmediated n rdamedia volume nc rdacarrier Includes bibliographies. Strip mining Congresses. Van Resnburg, P. W. J., editor. 4966 4966 2026-03-12 00:00:00 35672007691 622.292 S989t 1970 35672007691 1 2025-08-25 BOOK 0 0 0 COL_GRAL 0 BCENTRAL BCENTRAL 2024-10-18