INJURED WAS ROOF BOLTING LONGWALL MOVE MESHING TO ROOF WHEN RESIN CARTRIDGE FELL OUT OF DRILL HOLE, WHEN HE STEPPED ON THE ROLL OF MESHING TO PUT RESIN BACK IN, A NYLON TIE WRAP BROKE AND HE S LIPPED, WHEN HE SLID DOWN THE ROLL OF MESHING, HE STRUCK HIS CHIN ON THE CHUCK OF THE FACE DRILL.