EE WAS LOADING BELT ON TO A FLAT CAR WHEN THE CLAMP THAT WAS ATTACHED TO THE BELT BECAME LODGED AGAINST A SLATE BAR THAT WAS BEING USED TO GUIDE THE BELT WITH. AS HE TRIED TO DISLODGE THE CLAM P, THE CLAMP CAME LOOSE. CAUSING THE SLATE BAR TO SPRING BACK AND STRIKE EE ON THE RT. HAND DEGREE 6 CLASS 9 ACCIDENT.