EE switching rail car on track #7. Due to snow & ice build up on track, switch did not properly latch in place. As rail car passed over switch, switch kicked back striking EE. Initial medical treatment (including x-ray with negative result) provided 2/14/11. Subsequent medical evaluation performed 3/7/11 including x-ray that revealed fracture to 9th rib.
U.S. Mine Safety and Health Administration