On Monday, December 30, 2013, at 2:10 p.m. central standard time, a westbound BNSF Railway Company (BNSF) train with 112 cars loaded with grain derailed 13 cars while traveling on main track 1 at milepost 28.5 near Casselton, North Dakota.1 The first car that derailed (the 45th car) fouled the adjacent track, main track 2. At 2:11 p.m. an eastbound BNSF train with 104 tank cars loaded with petroleum crude oil (crude oil), traveling on main track 2, struck the derailed car that was fouling the track and derailed two head-end locomotives, a buffer car, and 20 cars loaded with crude oil.2 After the collision, about 476,000 gallons of crude oil were released and burned. On the day of the accident, the weather was cloudy with a temperature of -1°F and winds from the north at 7 mph. No injuries were reported by residents or either of the train crews. The BNSF reported damages of $13.5 million, not including lading and environmental remediation.