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

The operator of the Keystone oil pipeline has restarted the system ... though the line remained open between Oklahoma and Texas' Gulf Coast, according to a map from South Bow.

The 2,689-mile (4,327 kilometers) Keystone Pipeline carries crude oil ... line remained open between Oklahoma and Texas' Gulf Coast, according to a map from South Bow. Lower oil prices due to ...