MINER WAS LOADING A ROUND AT THE FACE. HE FELT A TRICKLE OF ROCK FALL ON HIS BACK. HE LOOKED UP AS A SMALL ROCK DISLODGED FROM THE BACK, STRUCK THE BRIM OF HIS HARD HAT AND SLID TO HIS SHOULDER. AS A RESULT OF THE CONTACT, A CORNER OF A FRONT TOOTH WAS CHIPPED REQUIRING DENTAL WORK TO REPAIR.