EMPLOYEE WAS ROOF BOLTING WHEN HIS STEEL GOT STUCK IN THE ROOF. EMPLOYEE STARTED TO DRILL A HOLE RIGHT BESIDE THE OTHER ONE AND HAD HIS HAND ON THE DRILL HEAD. VIBRATION WHILE DRILLING THE OTHER HOLE CAUSED THE STEEL THAT WAS STUCK IN THE ROOF TO COME OUT STRIKING EMPLOYEE ON LITTLE PINKY ON LEFT HAND, CUTTING IT REQUIRING STITCHES.