I'm sure you've already heard, but ...
http://www.theatlanticwire.com/natio...o-texas/64337/
A fertilizer plant went up in West, Texas with the media speculating about 60 to 100 "casualties", who may be dead or injured depending on your preferred news service.
Given that it was a fertilizer plant, it was *probably* ammonium nitrate, and this was quite likely a non-malicious industrial accident.