- Keystone operator says oil pipeline leak controlled, no threat to publicNBCNews.com
- Keystone pipeline spills 210000 gallons of oil on eve of permitting decision for TransCanadaWashington Post
- Keystone Pipeline leaks 210000 gallons of oil in South DakotaCNN
- Crews cleaning up Keystone Pipeline leak in Marshall CountyKSFY
- TransCanada responds to oil leak in Amherst, South DakotaMarketwired