1. Bieniawski ZT (1992) A method revisited: coal pillar strength formula based on field investigations. In Proceedings of the workshop on coal pillar mechanics and design. Pittsburgh, PA: US Department of the Interior, Bureau of Mines, IC Vol. 9315. pp.158–165.
2. Brown ET (2012) Risk assessment and management in underground rock engineering—an overview. J Rock Mech Geotech Eng 4(3):193–204
3. Brown ET (2007) Block caving geomechanics, 2nd edn. Julius Kruttschnitt Mineral Research Centre (JKMRC), Indooroopilly., p 696
4. Cornell CA (1967) Bounds on the reliability of structural systems. J Struct Div 93(1):171–200
5. Carlisle S, Jung SJ (2006) Probabilistic Design of Hardrock Openings and Pillars. In Golden Rocks 2006, The 41st US Symposium on Rock Mechanics (USRMS). American Rock Mechanics Association.