15.1. Introduction15.2. Strata Heat15.2.1. Methods of determining strata heat load15.2.2. Qualitative observations15.2.3. Fourier's law of heat conduction15.2.4. Geothermic gradient, geothermal step and thermal conductivity15.2.5. An analysis of three dimensional radial heat conduction15.2.6. Solution of the radial heat conduction equation15.2.7. Heat transfer coefficient for airways15.2.7.1. Convective heat transfer15.2.7.2. Radiative heat transfer

15.2.8. Summary of procedure for calculating heat flux at dry surfaces15.2.9. Heat transfer at wet surfaces15.2.10. In-situ measurement of rock thermal conductivity

15.3. Other Sources of Heat15.3.1. Autocompression15.3.2. Mechanised equipment15.3.2.1. Electrical equipment15.3.2.2. Diesel equipment15.3.2.3. Compressed air

15.3.3. Fissure water and channel flow15.3.4. Oxidation15.3.5. Explosives15.3.6. Falling rock15.3.7. Fragmented rock15.3.8. Metabolic heat

BibliographyAppendix A15.1. Appendix A15.2.Appendix A15.3.Appendix A15.4.