The problem created by the spontaneous heating of coal has been receiving attention for more than 100 years and many investigators have worked on problems directly or indirectly associated with this phenomenon.
Reference:
La Grange, C.C. 1950. Spontaneous heating of coal - summarized extracts from the literature. http://hdl.handle.net/10204/12810 .
La Grange, C. C. (1950). Spontaneous heating of coal - summarized extracts from the literature Retrieved from http://hdl.handle.net/10204/12810
La Grange, C.C Spontaneous heating of coal - summarized extracts from the literature. 1950. http://hdl.handle.net/10204/12810
La Grange CC. Spontaneous heating of coal - summarized extracts from the literature. 1950 [cited yyyy month dd]. Available from: http://hdl.handle.net/10204/12810