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

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

The operator of the Keystone oil pipeline restarted the system Monday after a spill onto farmland in North Dakota last week ...

The Keystone Pipeline in North Dakota was shut down Tuesday after reports of a "bang" and spilled oil, according to officials ...

The Keystone Pipeline went online in 2011. It runs through North Carolina, South Dakota, Nebraska, Kansas and Missouri. The ...

Trucks and workers started a cleanup effort at the site of a spill of the Keystone oil pipeline in rural North Dakota ...

The operator of the Keystone oil pipeline has restarted ... due to tariff issues helped mute challenges from the pipeline shutdown on gas prices, though diesel prices could still inch up, said ...

said he doesn’t expect gas prices to immediately increase because the major refineries served by the Keystone pipeline have millions of barrels in storage. “Even if the pipeline gets cut off ...

The operator of the Keystone oil pipeline said it planned ... due to tariff issues helped mute challenges from the pipeline shutdown on gas prices, though diesel prices could still inch up ...