1. U.S. Department of Transportation, Federal Railroad Administration, Hazardous materials transportation. https://www.fra.dot.gov/Page/P0151 (accessed 10 November 2017).
2. National Transportation Safety Board, Derailment of Canadian Pacific Railway Freight Train 292-16 and Subsequent Release of Anhydrous Ammonia Near Minot, North Dakota,2002
3. King C., Trichur R., Train carrying crude oil derails in Ontario. http://www.wsj.com/articles/train-carrying-crude-oil-derails-in-ontario-1424015961 (accessed 10 November 2017).
4. Collision of Union Pacific Railroad Train MHOTU-23 with BNSF Railway Company Train MEAP-tul-126-d with Subsequent Derailment and Hazardous Materials Release, Macdona, Texas;National Transportation Safety Board,2004
5. Collision of Norfolk Southern Freight Train 192 with Standing Norfolk Southern Local Train P22 with Subsequent Hazardous Materials Release at Graniteville, South Carolina;National Transportation Safety Board,2005