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

The latest leak in the Keystone oil pipeline in North Dakota on Tuesday continues ... but it was a different story a few ...

The shutdown of the Keystone XL pipeline may drive up US oil prices, experts warn, with supply chain disruptions and ...

A proposed extension to the pipeline called Keystone XL would have transported crude oil to refineries on the Gulf Coast, but ...

The Keystone oil pipeline was shut down Tuesday morning after a rupture in North Dakota halted the flow from Canada to U.S.

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

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 latest leak in the Keystone oil pipeline in North Dakota on ... when TC Energy proposed building a second pipeline called the Keystone XL pipeline. That pipeline drew years of protests from ...