About 3:06 p.m., on October 16, 1980, Union Pacific Railroad Company (UP) freight train Extra 3749 West (NPH-16) struck the rear of UP grain train Extra 3557 West (SGTLB-635) while it was standing about 100 feet west of intermediate signal No. 5517 near Hermosa, Wyoming. Two train crewmembers were killed and two crewmembers were injured. The 3 locomotive units of NPH-16 and 16 cars, including the caboose, of SGTLB-635 were derailed. Total damage was estimated to be $993,000.