INJURED WAS ASSISTING IN MAKING A BELT SPLICE. COMEALONGS WERE BEING USED TO PULL THE BELT TOGETHER. THE COMEALONGS SLIPPED AND INJURED FELL BACKWARDS AND HIT RIGHT ELBOW ON BELT RAIL. THE MIN ING OPERATION WAS NOT INVOLVED IN THE ACCIDENT AND NO RULES OR REGULATIONS WERE VIOLATED. TRAINING AND PROFICIENCY COULD POSSIBLY HAVE BEEN A FACTOR AS EE SHOULD HAVE BEEN MORE AWARE OF COMEA