download (3)The Burlington Northern and Santa Fe railroad has advised customers that their shipping orders could be up to 36 hours late due a minor train derailment in northern Arizona. Both tracks were closed when an eastbound train struck a boulder early Sunday evening about five miles west of Williams. BNSF spokeswoman Lena Kent said no one was injured when three locomotives and one rail car derailed. She has not responded to questions as to how the boulder got there. One of the tracks was reopened just after 6:00 p.m. Monday. The other reopened at 12:30 a.m. Tuesday. The BNSF has posted a customer notice advising shipping orders could run 24-36 hours behind as the railroad tries to catch up on the derailment-related backlog.