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 /

Cape Town : South African Institute of Mining and Metallurgy, 1970 .
xvi, 388 pages :

Stability in open pit mining : proceedings of the first international conference on stability in open pit mining, Vancouver, B. C., Canadá, November 23-25, 1970 /

New York : Society of Mining Engineers of AIME, 1971 .
v, 242 pages :