Enbridge corp.

This page gives background about the very long list of Enbridge pipeline spills -
http://pipeupagainstenbridge.ca/learn/enbridge
Between 1999 and 2008, Enbridge lists 610 spills that released approximately 21 million litres (132,000 barrels) of hydrocarbons.

Further information -

2011
- How Safe Really Are Canada’s Pipelines? (Huffington Post)
- Enbridge Oil Spill Cover-Up in Michigan (YouTube video)
- N.W.T. oil pipeline leak estimate grows (CBC)

2010
- EPA and Enbridge Still Covering-up Lax Clean-up Efforts? (Headwaters)
- Oil Spill Cover-up & Enbridge Labor Violations (Headwaters)