Abstract: At approximately 10:37 a.m. on November 30, 1990, Employee #1 was working on an electrical box on a shield trailing power unit. Prior to the accident, miners had unloaded a segment car approximately 50 ft from Employee #1. A miner then pulled the empty segment car with a 3/8 in. cable hooked to a tug, which was 23 ft away from Employee #1. The moving segment car struck Employee #1, pinning him against the electrical box post. He suffered a fractured leg, dislocated hip, and crushed disc. No warning device, such as an audible bell, horn, or whistle was used, nor was a verbal warning given before moving the equipment.