Accident in France

It was a dark night in France. A security guard was smoking a cigarette, in a factory of gas, he threw his cigarette on the floor and...BOOM.
All the factory was destroyed in seconds.
It was one of the most important disasters in France, ten people died, three guards and seven empolyees. It happened because a gas pipe broke and the fire of the cigarette made it explode.
Because of that accident a lot of gas factories in the world revise their pipes every day.