Vehicles litter the highway as more than 300 people have been injured 

Vehicles litter the highway as more than 300 people have been injured following a multi-vehicle crash in snowy conditions, Thursday, March 21, 2013 on Highway 2 south of Edmonton, Alberta. A blizzard sweeping across the Canadian plains caused a chain of traffic wrecks involving a bus, semi-trailer trucks and cars south of Edmonton, Alberta, sending about 300 injured travelers to hospitals on Thursday, officials said. (AP Photo/The Canadian Press, Derek Fildebrandt)
Associated Press
Vehicles litter the highway as more than 300 people have been injured following a multi-vehicle crash in snowy conditions, Thursday, March 21, 2013 on Highway 2 south of Edmonton, Alberta. A blizzard sweeping across the Canadian plains caused a chain of traffic wrecks involving a bus, semi-trailer trucks and cars south of Edmonton, Alberta, sending about 300 injured travelers to hospitals on Thursday, officials said. (AP Photo/The Canadian Press, Derek Fildebrandt)
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