1. A study of the strength of coal pillars;Salamon;J South African Inst Min Metall,1967
2. Stope-and-pillar design for Elliot Lake Uranium Mines;Hedley;Bull Can Inst Min Metall,1972
3. The use of computer applications at BCL Limited in planning pillar extraction and the design of mining layouts;Von Kimmelmann,1984
4. Design guidelines for open stope support;Potvin;Bull Can Inst Min Metall,1989
5. Determination of the stregth of hard-rock mine pillars;Lunder;CIM Bull,1997