Keystone oil pipeline shut down after "mechanical bang" reported
Keystone oil pipeline shut down after "mechanical bang" reportedhttps://wpnnradio.com/wp-content/themes/movedo/images/empty/thumbnail.jpg150150adminadminhttps://secure.gravatar.com/avatar/790df65a416873c3f0501d984b0b24a2f32bf2af0d1509085b901ade4bbb36e7?s=96&d=mm&r=g
An employee on a pump station heard what was described as a mechanical bang early Tuesday morning, an official told CBS News. source
