RE-AGGRIVATION OF INJURY THAT HAPPENED ON 8/20/04 (COLLISION OF TWO MANTRIPS TRAVELING TO SECTION). ON 11/8/04 THE SUPERVISOR WAS SHOVELING BELT AND FELT PAIN IN HIS LOWER BACK. EXAM SHOWED A MUSCLE PULL TO SAME LOWER BACK AREA. THE SUPERVISOR WAS UNABLE TO RETURN TO WORK HIS NEXT SCHEDULED SHIFT.