EE WAS INSTALLING ROOF BOLTS IN THE LAST ROW OF #2 HEADING HE WAS USING SECTIONAL STEEL TO DRILLTHE LAST 18"" OF THE HOLE & PINCHED THUMB OF RIGHT HAND BETWEEN THE 2 PIECES OF STEEL WHEN HE APP LIED UP PRESSURE ON THE DRILL HEAD OF THE BOLTERGLOVES WERE BEING WORN WHEN THE ACCIDENT HAPPENED