DRILL STEEL PLUGGED UP SO EMPLOYEE GRABBED TORQUE WRENCH TO HIT STEEL. AS HE SWUNG THE WRENCH HE CAUGHT HIS FINGER BETWEEN WRENCH AND CANOPY OF ROOF BOLTER. CAUSE OF INJURY WAS AWARENESS. COMPLIANCE WITH RULES/ REGS WAS NOT A FACTOR, SAFETY PROTECTIVE EQUIP NOT A FACTOR, MINER PROFICIENCY A FACTOR, MINING EQUIP/ SYSTEMS NOT A FACTOR.