An employee on a pump station heard what was described as a mechanical bang early Tuesday morning, an official told CBS News.

An employee on a pump station along the pipeline heard a "bang" Tuesday morning, spill investigation program manager with the ...

The North Dakota Department of Environmental Quality and the federal Pipeline and Hazardous Materials Safety Administration are working on cleanup and an investigation into what caused Tuesday’s ...

An estimated 3,500 barrels of oil spilled in a field near Fort Ransom, N.D., and the release was contained, the pipeline’s ...

The cause of the rupture and the total volume of oil released after the North Dakota spill remain unclear, officials said.

An employee working at the site near Fort Ransom heard a “mechanical bang” and shut down the pipeline within about two minutes, said Bill Suess, spill investigation program manager with the ...

The Keystone Pipeline was shut down after a "bang" was reported Tuesday morning in North Dakota, according to Bill Suess, spill investigation program manager with the North Dakota Department of ...