Torrington, Connecticut: An accidental fire in the wood shop of the Oliver
Wolcott Technical School resulted in a hole in the roof Monday. It was
caused by the spontaneous combustion of a pile of rags used to stain
toolboxes that students had built, the Fire Marshall said. The rags were
laying on a wooden table that burned before the fire went to the roof...
.... Students who left the pile of rags likely will not be disciplined...

Geesh! Pretty scary...