The welding supplies themselves can sustain fires. If an OXY acetelene rig gets its hoses cut, it is virtually impossible to put that fire out, you have to shut off the valves or let it run out of oxygen and fuel. In a cramped space the operator is going to evac before doing this. too much smoke. by the time the firefighters get there the whole situation is too hot to handle, so they gotta do the total loss options. drown it, foam it. And the people saying this was the russians are wrong. It was the canadians.