FREEMAN, S.D. -- TransCanada officials are still searching for the cause of an oil slick discovered in southeast South Dakota that shut down a major pipeline. A team of about 100 workers assembled by ...

TORONTO — Canadian Prime Minister Mark Carney raised the prospect of reviving the contentious Keystone XL pipeline project with U.S. President Donald Trump during his White House visit this week, a ...

[Stay on top of transportation news: Get TTNews in your inbox.] Canadian Prime Minister Mark Carney pitched deeper cooperation with the U.S. on energy, including a possible revival of the Keystone XL ...

BISMARCK, N.D. (AP) — A fatigue crack in the Keystone Pipeline led to an oil spill in North Dakota earlier this year that released thousands of barrels of oil onto farmland, according to the pipeline ...