A CBC News investigation has learned that TransCanada Pipelines — the Canadian company behind the controversial U.S. Keystone XL pipeline proposal — was troubled by quality-assurance problems on another recent American pipeline that exploded.
A CBC News investigation has learned that TransCanada Pipelines — the Canadian company behind the controversial U.S. Keystone XL pipeline proposal — was troubled by quality-assurance problems on another recent American pipeline that exploded.