Planning open pit mines :  proceedings ... / 
edited by P. W. J. van Rensburg. 
 - Cape Town :  Balkema (A.A.), for the South African Institute of Mining and Metallurgy,  [1971] 
 - xvi, 388 p. :  ill. 
<br/><br/> At head of title. Open pit mining symposium 1970. 
<br/><br/><label>LCCN: </label>93044182 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Strip mining.<br/>Slopes (Soil mechanics).