One of the research projects undertaken to establish the cause of the apparent inactivity of South African coal dusts when subjected to the explosibility tests designed by the U.S.B.M. was to study the influence of methane content of the coal on the explosibility index.
Reference:
Sevenster, P. & Joubert, J. 1967. Interim report on the effect of adsorbed methane on the explosibility of coal dust. http://hdl.handle.net/10204/12948 .
Sevenster, P., & Joubert, J. (1967). Interim report on the effect of adsorbed methane on the explosibility of coal dust Retrieved from http://hdl.handle.net/10204/12948
Sevenster, PG, and JH Joubert Interim report on the effect of adsorbed methane on the explosibility of coal dust. 1967. http://hdl.handle.net/10204/12948
Sevenster P, Joubert J. Interim report on the effect of adsorbed methane on the explosibility of coal dust. 1967 [cited yyyy month dd]. Available from: http://hdl.handle.net/10204/12948