On September 19, 2015, about 6:18 a.m., central daylight time, BNSF Railway Company (BNSF) unit ethanol train GMNXDPK717, with 3 locomotives, 96 loaded tank cars, and 2 hopper cars filled with sand, derailed at a small bridge at milepost (MP) 597.7 near Lesterville, South Dakota. Seven cars (tank car 2 through tank car 8 from the head end of the train) derailed. Two of the derailed cars breached and released 49,743 gallons of denatured fuel ethanol (ethanol) that caught fire. A third car leaked ethanol from its bottom outlet valve. There were no injuries and no evacuation. The estimated damage was $1.1 million.