Alberta Occupational Health and Safety has at least two officers looking for safety violations following an explosion at the Horizon oilsands site.
A pickup truck passes a mining shovel filling a haul truck
at an oilsands mine near Fort McMurray, Alta., in this July 9, 2008
file photo (Jeff Mcintosh/ The Canadian Press)
The blast occurred around 3:30 p.m. MT Thursday at the site near the Fort McKay First Nation in northern Alberta, sending flames and smoke hundreds of metres into the air.

The owner of the site, Canadian Natural Resources Ltd., said four people were injured in the explosion. Two were taken to hospital in Fort McMurray with burns, while two others were treated at the site.

Federal and provincial environmental officials are also on the scene.
Source: CBCnews

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