ON 9-22-03 A ROOF BOLTER OPERATOR HAD JUST FINISHED ROOF BOLTING A FACE AREA. HE TRAMMED THE ROOF BOLTING MACHINE BACK FROM THE FACE PREPARING TO MOVE THE MACHINE TO THE NEXT PLACE TO BE SUPPO RTED. HE STOPPED TO WAIT FOR THE CONTINUOUS MINE TO MOVE PAST THE BOLTING MACHINE WHEN HE REMOVED HIS HARD HAT TO SCRATCH HIS HEAD WHEN A PIECE OF ROCK FELL OUT FROM BETWEEN ROOF SUPPORTS STR