EMPLOYEE REPORTED: HE WAS PERFORMING THE JOB AS A ROOF BOLTER. WHEN DRILLING A HOLE IN THE MINE ROOF, HE HAD DRILLED THE DEPTH OF THE 1ST AUGER, AFTER INSERTING THE 2ND AUGER INTO THE 1ST AUGER THERE WAS A GAP BETWEEN THE TWO AUGERS. WHEN THE BOOM OF MACHINE WAS RAISED, THE TWO AUGERS CAME TOGETHER CATCHING THE FLESH BETWEEN HIS INDEX FINGER & THUMB RESULTING IN A LACERATION.