When a little SNUF crashed at Laarburch in the late 90's (I think it was the very last before LBH closed) - the runway was closed for two weeks while several dinky little hangar sweepers were written-off gathering all the Carbon Fibres from the floor.
That was just one single seat Harrier!
Notably - all groundcrew ran away from the crash site and site guards had to have medical tests afterwards.
The resin in the structure is the flammable substance with regard to fires - The Fibres that float up with the smoke just clog your lungs for life.