The Lac-Mégantic rail disaster occurred in the town of Lac-Mégantic, in the Eastern Townships region of Quebec, Canada, at approximately 01:15 EDT, on July 6, 2013, when an unattended 73-car freight train carrying Bakken Formation crude oil rolled down a 1.2% grade from Nantes and derailed downtown, resulting in the fire and explosion of multiple tank cars. Forty-seven people were killed. More than 30 buildings in the town's centre, roughly half of the downtown area, were destroyed, and all but three of the thirty-nine remaining downtown buildings had to be demolished due to petroleum contamination of the townsite. Initial newspaper reports described a 1-kilometre (0.6 mi) blast radius.