INJURED HAD COMPLETED BOLTING FIRST ROW OF BOLTS IN THE #3 HEADING. HE NOTICED A LOOSE PIECE OF DRAW ROCK APPROX. 33""X23""X3"" FELL BEHIND HIM STRIKING HIS LEFT SHOULDER. HE WAS TAKEN TO LOGAN G ENERAL WHERE X RAYS REVEALED A HAIRLINE FRACTURETO THE LEFT SHOULDER.