1. Hartman HL, Mutmansky JM, Ramani RV, Wang YJ. Heat sources and effects in mines. Mine ventilation and air conditioning. 3rd ed. 1998. p. 592.
2. Bottomley P. The reduction in heat flow due to the insulation of rock surfaces in mine airways. 2nd US Mine Ventilation Symposium. Reno, NV1985. p. 457–61.
3. The insulation of rock surfaces – an empirical study;Bottomley;J Mine Ventilation Soc S Afr,1987
4. Chellam S. Thermal insulation of underground mine workings at deep levels Master of Science. Rapid City, South Dakota, South Dakota School of Mines and Technology; 1992.
5. Understanding shotcrete–the fundamentals;Warner;Concr Int,1995