Well they certainly do happen: - http://en.wikipedia.org/wiki/Oppau_explosion http://en.wikipedia.org/wiki/Oppau_explosion - http://en.wikipedia.org/wiki/Texa

Well they certainly do happen: - http://en.wikipedia.org/wiki/Oppau_explosion http://en.wikipedia.org/wiki/Oppau_explosion - http://en.wikipedia.org/wiki/Texas_City_Disaster http://en.wikipedia.org/wiki/Texas_City_Disaster Ammonium nitrate is nothing to trifle with: "As all involved died in the explosion, the causes are not clear",