EE WAS HAUING SUPPLIES TO THE SECTION AND HIS SUPPLY CAR RAN OVER A ROCK AND DERAILED BESIDE 4 BELT. EE WAS ATTEMPTING TO HOOK UP A CHAIN RATCHET OVER A ROOF BOLT AND A PIECE OF DRAW ROCK MEAS URING 16"" X 12"" X 4"" THICK FELL, STRIKING HIM ON THE SHOULDER AND ARM.