2 motors with rock duster & 2 cars started up 19 rt. section when loads became difficult to pull. 1 of the motors being operated by the injured & the other one by another ee. Motors were in a turn when they got off the motors to see if they had wrecked. The injured was getting back on tram & set 1 foot in the tram when he fell on his foot. His foot was pinned between rail n& motor.