CBC.ca | UPDATE 1-Nexen pipeline leaks 31500 bbls of emulsion at oil sands site Reuters In terms of volume, the incident is one of the largest environmental spills on land in North American history, greater than the estimated 20,082 barrels of crude oil released in Michigan from Enbridge Inc's Line 6B rupture in July 2010. It comes as ... Nexen pipeline spills oil emulsion in northern Alberta Cnooc Canada Unit Nexen Reports Pipeline Spill in Oil Sands |