In planning research projects in connection with coal dust explosion hazards, it must be borne in mind that explosions take place in tow stages, viz.
Reference:
Sevenster, P. 1969. Explosion hazards advisory committee research programme for 1970. http://hdl.handle.net/10204/12915 .
Sevenster, P. (1969). Explosion hazards advisory committee research programme for 1970 Retrieved from http://hdl.handle.net/10204/12915
Sevenster, PG Explosion hazards advisory committee research programme for 1970. 1969. http://hdl.handle.net/10204/12915
Sevenster P. Explosion hazards advisory committee research programme for 1970. 1969 [cited yyyy month dd]. Available from: http://hdl.handle.net/10204/12915