About 3:58 a.m., mountain standard time, on April 13, 1984, Burlington Northern Railroad Company freight trains Extra 6714 West and Extra 7820 East collided head-on on the single main track about 1,027 feet west of the west turnout of the passing track at Wiggins, Colorado. Seven locomotive units derailed and were destroyed in the collision and burning diesel fuel was released from ruptured fuel tanks; 40 cars derailed, 26 of which were destroyed. Five train crewmembers were killed and two were injured. Total damage was estimated to be $3,891,428.
About 4:56 a.m., mountain standard time, on April 22, 1984, eastbound Burlington Northern freight train Extra 7843 East struck the rear of Burlington Northern freight train Extra ATSF 8112 East on the main track at Pedro passing siding near Newcastle, Wyoming. During the collision and subsequent derailment sequence several cars of freight train Extra 5533 East, which were standing unattended in the Pedro passing track, were also struck and derailed. As a result, 5 locomotives units, a caboose, and 21 cars derailed. The locomotive units, caboose, and 13 cars were either destroyed or heavily damaged. Two train crewmembers were killed, and two were injured. Total damage was estimated to be $1,358,993.