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NOTES

Flame propagation through smoke air mixture - does not generate significant overpressure.

Flash fire - rapid flame front through diffuse fuel (dust, gas, vapours of ignitable liquid) - without damaging pressure.

Rollover - unburned fuel in ceiling layer ignites - flame front usually relatively slow - considered indicator of impeding flashover.

Quality of mixture (close or far from ideal mixture) impacts flame front speed.

Can promote fire spread.