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
North Dakota oil spill raises questions about safety | MPR News
North Dakota: The Oil Spill State | Earth Focus | News & Community | KCET
December Crude Spill In North Dakota Thrice As Big As Originally Estimated | OilPrice.com
Tesoro's North Dakota oil pipeline cleanup (PHOTOS)
In North Dakota, Oilfield Spill Problems Worsen | Inside Energy
TransCanada could lose Keystone permit over oil spill, South Dakota regulator says - MarketWatch
South Dakota Oil Spill Reveals Major Pipeline Problems | Time
Cause of Keystone Pipeline Spill Worries South Dakota Officials as Oil Flow Restarts - Inside Climate News
Opposition to Keystone 1 Pipeline in South Dakota and huge oil leak, USA | EJAtlas
North Dakota oil spill raises questions about safety | MPR News
Army Corps sees no cause to shut Dakota pipeline during review -filing | Reuters
Oil Spill in North Dakota Raises Detection Concerns - The New York Times
Keystone Pipeline spill in South Dakota twice as big as first thought
With Big Spill to Clean, Pipeline Owner Seeks Keystone XL Approval - The New York Times
Keystone Pipeline Spill History | Bold Nebraska
Keystone Pipeline Oil Spill Reported In South Dakota : The Two-Way : NPR
North Dakota Pipeline Oil Spill | Preserve the Beartooth Front
North Dakota farmer makes crude discovery: largest oil spill on US soil | Fox News
In North Dakota, Oilfield Spill Problems Worsen | Inside Energy
HazardEx - US Keystone pipeline leaks for second time in two years
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Keystone Pipeline Leaks 14,000 Barrels of Oil in Kansas | Smart News| Smithsonian Magazine
S.D. Tar Sands Oil Spill: Bad Omen for Keystone XL Safety
