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1979 Mississauga train derailment
The Mississauga train derailment of 1979 occurred on Saturday, November 10, 1979, in Mississauga, Canada, when a 106-car Canadian Pacific freight train carrying explosive and poisonous chemicals from Windsor, Ontario was 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 evacuation of 2005. 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.
==Causes==
On the 33rd car, heat began to build up in an improperly-lubricated journal bearing on one of the wheels, resulting in the condition known among train workers as a "hot box". Residents living beside the tracks reported smoke and sparks coming from the car, and those who were close to Mississauga thought the train was afire. The friction eventually burned through the axle and bearing, and as the train was passing the Burnhamthorpe Road level crossing, a wheelset (one axle and pair of wheels) fell off completely.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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