A 106-car Canadian Pacific freight train carrying explosive and poisonous chemicals from Windsor, Ontario, Canada derails in Mississauga, Ontario, Canada just west of Toronto, Ontario, Canada, causing a massive explosion and the largest peacetime evacuation in Canadian history and one of the largest in North American history.
The Mississauga train derailment of 1979, also known as the Mississauga Miracle occurred on Saturday, November 10, 1979, in Mississauga, Ontario, Canada, when a 106-car CP Rail freight train carrying chemicals and explosives including styrene, toluene, propane, caustic soda, and chlorine from Windsor, Ontario derailed near the intersection of Mavis Road and Dundas Street in Mississauga, Ontario.
As a result of the derailment, more than 200,000 people were evacuated in what was the largest peacetime evacuation in North America until the New Orleans evacuations during Hurricane Katrina. There were no deaths resulting from the incident. This was the last major explosion in the Greater Toronto Area until the Sunrise Propane blast in 2008.
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