2013 North Dakota oil spill cleanup ongoing; work to be done by 2017 : The American Energy News
North Dakota farmer makes crude discovery: largest oil spill on US soil | Fox News
The Keystone Pipeline oil leak is almost 10 times worse than initially thought | CNN
Tesoro's North Dakota oil pipeline cleanup (PHOTOS)
Oil spill from Keystone Pipeline in South Dakota twice as big as first thought | Globalnews.ca
Cleanup Ongoing after North Dakota Pipeline Oil Spill
Keystone XL gets final approval to build in Nebraska days after a huge oil spill in South Dakota — Quartz
Keystone pipeline reopens after 1.4 million-litre spill in North Dakota | CBC News
Keystone South Dakota Oil Spill | Workers clean up an oil sp… | Flickr
North Dakota: The Oil Spill State | Earth Focus | News & Community | KCET
TransCanada could lose Keystone permit over oil spill, South Dakota regulator says - MarketWatch
KXL oil spill in North Dakota
Cause of Keystone Pipeline Spill Worries South Dakota Officials as Oil Flow Restarts - Inside Climate News
Keystone Pipeline Oil Spill Reported In South Dakota : The Two-Way : NPR
Tesoro's North Dakota oil pipeline cleanup (PHOTOS)
Standing Rock Sioux to fight new Dakota pipeline, saying spill could ruin their land | Fox Business
S. Dakota Keystone pipeline shut down after oil spill
How Much Oil Has Spilled From US Pipelines Since 2010
S.D. Tar Sands Oil Spill: Bad Omen for Keystone XL Safety | NRDC
TransCanada Fails the Safety Test Again: A Timeline of the South Dakota Keystone I Pipeline Spill | Bold Nebraska
Keystone pipeline leak in South Dakota likely caused by 2008 damage: report | Globalnews.ca
Leak in Keystone pipeline spills 9,000 barrels of oil in North Dakota
