S. Dakota Keystone pipeline shut down after oil spill
Oil Spill in North Dakota Raises Detection Concerns - The New York Times
S.D. Tar Sands Oil Spill: Bad Omen for Keystone XL Safety
HazardEx - US Keystone pipeline leaks for second time in two years
Farmers Fight a New Kind of Pipeline Spill--Salty Wastewater - WSJ
Why Electric Cars are Better: Massive Keystone Pipeline Oil Leak Twice as bad as Thought
How long did the North Dakota oil spill remain undetected? - Greenpeace USA
Over 380,000 gallons of oil spill from Keystone pipeline in North Dakota - ABC News
Keystone Pipeline Spill History | Bold Nebraska
Massive 2013 Oil Spill in North Dakota Still Not Cleaned Up
Documents Raise Important Questions About Tesoro's Pipeline Spill in North Dakota - DeSmog
Keystone Pipeline spill in South Dakota twice as big as first thought
Oil spill from Keystone Pipeline in South Dakota twice as big as first thought | Globalnews.ca
Keystone Pipeline spill in South Dakota twice as big as first thought
Keystone pipeline reopens after 1.4 million-litre spill in North Dakota | CBC News
In North Dakota, Oilfield Spill Problems Worsen | Inside Energy
Opposition to Keystone 1 Pipeline in South Dakota and huge oil leak, USA | EJAtlas
Cause of Keystone Pipeline Spill Worries South Dakota Officials as Oil Flow Restarts - Inside Climate News
With Big Spill to Clean, Pipeline Owner Seeks Keystone XL Approval - The New York Times
December Crude Spill In North Dakota Thrice As Big As Originally Estimated | OilPrice.com
North Dakota farmers fear more than just oil spills – Living with Oil and Gas
Keystone Pipeline Oil Spill Reported In South Dakota : The Two-Way : NPR
