#3 ENTRY OF GRASSY CREEK MAINS SECTION. EE HAD DRILLED A HOLE & WAS PREPARING TO INSTALL A ROOF BOLT, WHEN A ROCK FELL & STRUCK HIS MOUTH. RESULTING IN A LACERATION TO THE RT. UPPER & LOWER SIDE OF HIS MOUTH & LEFT LOWER SIDE OF MOUTH, REQUIRING STITCHES TO CLOSE.