1. Bluhm SJ. Deep mine Task 6.5.3 Report: Energy Recovery Equipment. Bluhm Burton Engineering, Johannesburg, South Africa
2. SIEMAG. Fluid transportation services. Available from: http://www.mining-technology.com/contractors/winding/siemag/index.html#siemag5 (Accessed December 2003)
3. Performance testing of an energy recovery turbine at a three stage spray chamber;Ferguson;J. Min. Ventilat. Soc. S. Afr,1984
4. Ramsden R, Bluhm SJ. Energy recovery turbines for use with underground air coolers. In: Proceedings of the 2nd US Mine Ventilation Symposium, Reno, NV, 23–25 September 1985. p. 571–80
5. Kimmel HE. Speed controlled turbine expanders. Hydrocarbon Engineering, May/June 1997. Palladian Publications Limited, UK; 1997