EE WAS OPERATING A ROOF BOLTER INSTALLING 6' BRUTER BOLTS. DURING INSTALLATION ONE OF THE THE BOLTS BENT AND EE TOOK HOLD OF THE BOLT AND SPUN THE DRILL POD IN REVERSE TO RELEASE THE BOLT FROM THE CHUCK. THE BOLT STRUCK EE IN THE RIGTH WRIST AND HAND. EE SUSTAINED A FRACTURE IN THE RIGHT WRIST.