North Dakota oil spill raises questions about safety | MPR News
Keystone Pipeline Oil Spill in Kansas Underscores Construction Flaws - Bloomberg
Keystone Pipeline Spill History | Bold Nebraska
Pipeline Spill Adds To Concerns About Dakota Access Pipeline : NPR
Keystone cleanup turns remote Kansas valley into a small town | Reuters
Keystone pipeline shuts down after oil spill in Kansas creek | PBS NewsHour
Oil spill from Keystone Pipeline in South Dakota twice as big as first thought | Globalnews.ca
North Dakota: The Oil Spill State | Earth Focus | News & Community | KCET
After Leak in North Dakota, Keystone Pipeline Restart Waiting on Corrective Action
Keystone Pipeline spill in South Dakota twice as big as first thought
S. Dakota Keystone pipeline shut down after oil spill
South Dakota Oil Spill Reveals Major Pipeline Problems | Time
176,000 gallons of oil spilled at North Dakota pipeline — RT USA News
North Dakota farmer makes crude discovery: largest oil spill on US soil | Fox News
Keystone oil spill casts doubt on the safety of proposed Keystone XL pipeline | The World from PRX
In Wake of North Dakota Spill, Congress Wants Review of Keystone Pipeline
North Dakota oil spill raises questions about safety | MPR News
Standing Rock Sioux to fight new Dakota pipeline, saying spill could ruin their land | Fox Business
Wastewater pipelines often leak in North Dakota (Built to spill) — High Country News – Know the West
S.D. Tar Sands Oil Spill: Bad Omen for Keystone XL Safety
Tesoro's North Dakota oil pipeline cleanup (PHOTOS)
Salting the earth: North Dakota farmers struggle with a toxic byproduct of the oil boom
