As Evacuation Ends For Explosive Oil Train Crash, Officials Hint At The Persistent Threat Of Rail Transport

www.thinkprogress.org/climate/2014/01/01/3109321/casselton-train-derailment/
"While the crash of a train carrying crude oil in North Dakota led to fireballs rocketing into the air, clouds of thick black smoke for 15 miles, and the evacuation of nearby residents, officials are saying the incident could have been much worse."