WAS CONDUCTING PRE-SHIFT EXAMINATION AT THE SECTION. NEEDED TO REMOVE LASER SIGHTS FROM SIGHT SPAD. THIS AREA INVOLVED WAS CLOSE TO RIB. TURNED BACK TO RIB AND AT THIS TIME A SECTION OF THE RI B 4 1/2 FT. LONG AND 1 FT THICK ROLLED OUT STRIKING THE EE ON LOWER BACK AND LEG. TREATED AND RELEASED FROM HOSPITAL. BRUISED BACK AND LEG.