The 2,689-mile Keystone Pipeline carries crude oil from Alberta, Canada, to refineries in Illinois, Oklahoma and Texas.

The operator of the Keystone oil pipeline brought the conduit back into service, putting an end to a weeklong outage caused by an estimated 3,500-barrel spill in rural North Dakota.

South Bow, a liquid pipelines business that manages the pipeline, estimated the spill’s volume at 3,500 barrels, or 147,000 gallons. Keystone’s entire system remains shut down.

BISMARCK, N.D. (AP) — The nearly 2,700-mile Keystone oil pipeline was shut down Tuesday morning after it ruptured in North Dakota, halting the flow of millions of gallons of crude oil from ...

Trucks and workers started a cleanup effort at the site of a spill of the Keystone oil pipeline in rural North Dakota. The cause of the spill and the timing to get the pipeline back online remain ...

BISMARCK, N.D. — The nearly 2,700-mile Keystone oil pipeline was shut down Tuesday morning after it ruptured in North Dakota, halting the flow of millions of gallons of crude oil ...

An estimated 3,500 barrels of crude oil spilled into an agricultural field in North Dakota after a Keystone Pipeline employee heard a "mechanical bang" from the system early Tuesday morning ...

An estimated 3,500 barrels of crude oil spilled into an agricultural field in North Dakota after a Keystone Pipeline employee heard a "mechanical bang" from the system early Tuesday morning ...

The nearly 2,700-mile Keystone oil pipeline was shut down Tuesday morning after it ruptured in North Dakota, halting the flow of millions of gallons of crude oil from Canada to refineries in the U.S.

The pipeline shutdown means that refineries that rely on crude oil will have 3% to 4% less of the total flows in a daily market of 17 million to 20 million barrels, said Ramanan Krishnamoorti ...