InsideClimate News | Cause of Keystone Pipeline Spill Worries South Dakota Officials as Oil Flow Restarts InsideClimate News South Dakota regulators are worried that a construction problem suspected in the recent Keystone Pipeline oil spill could mean other sections of the pipeline—and the state's groundwater—are at risk. They reiterated their right to shut the pipeline ... Environmental concerns mount as Keystone pipeline leaks more oil than predicted |