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

The Keystone oil pipeline was shut down Tuesday morning after it ruptured in North Dakota, with the spill confined to an ...

The North Dakota Department of Environmental Quality and the federal Pipeline and Hazardous Materials Safety Administration ...

Keystone oil spill in ND is roughly 3,500 barrels State lawmakers approved an idea to add protection to people living in ...

The nearly 2,700-mile Keystone oil pipeline was shut down Tuesday morning after it ruptured in North Dakota, halting the flow ...

The Keystone Pipeline was shut down after a leak in North Dakota was discovered. An estimated 147,000 gallons of oil spilled ...

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 ...