Planning open pit mines :  proceedings of the symposium on the theoretical background to the planning of open pit mines with special references to slope stability, Johannesburg, Republic of South Africa, 29 August-4 September 1970 / 
edited by P.W.J. van Ransburg. 
 - Cape Town :  Published on behalf of the South African Institute of Mining and Metallurgy by Balkema (A.A.),  1971. 
 - xvi, 388 pages :  illustration ;  30 cm. 
<br/><br/> At head of title: Open mining symposium 1970. 
<br/><br/>Bibliography: p.365-388. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Strip mining--Congresses.<br/>Slopes (Soil mechanics)--Congresses.