THE INJURED AND A CO-WORKER WERE ATTEMPTING TO REMOVE A BURST HYDRAULIC HOSE ON THE RIGHT SIDE CONTINUOUS MINER. TO BREAK THE FITTING LOOSE, THE CO-WORKER WAS USING TWO PICK HAMMERS. A SMALL PIECE OF STEEL THE APPROX. SIZE OF A BB BROKE OFF OF THE FACE OF ORE OF THE HAMMER, STRIKING THE INJURED IN THE LT. FOREARM AND PENETRATING INTO THE TISSUE.