01044cam a22002171a 4500001000600000003000600006005001700012008004100029040001700070082001600087111015700103245027200260260007400532300004300606336002600649337002800675338002700703504002900730650003000759700003700789u6321SIRSI20250825175125.0241018s1970    ne ab   r     100|0 eng d  dclrauoherda04a622.2922202 aSymposium on the Theoretical Background to the Planning of Open Pit Mines with Special Reference to Slope Stabilityd(1970 :cJohannesburg, Sudáfrica)10aPlanning open pit mines :bproceedings 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 /cedited by P. W. J. Van Rensburg.  aCape Town :bSouth African Institute of Mining and Metallurgy,c1970.  axvi, 388 pages :billustrations, maps.  atextbtxt2rdacontent  aunmediatedbn2rdamedia  avolumebnc2rdacarrier  aIncludes bibliographies. 0aStrip miningxCongresses.10aVan Resnburg, P. W. J.,eeditor.