BTW,sparky,
The smoke chamber was the ONLY way to give New FF's the taste of the heat of the fire, before they actually hit the real thing!.
These days, we burn an old derelict house down, in 4-5 stages, but it's too controlled, nothing counts for the madness and confusion of turning up at a K-99 house fire at 0230,when everyone is still half asleep!. [Linked Image]