TWO WELDERS WERE ATTMEPTING TO REMOVE A TOOTH ADAPTER ON A P&H 2800 BUCKET. AFTER REMOVING EMBEDDED DIRT, OEN WELDER MOVED APPROX 15' OFF TO THE SIDE WHILE THE OTHER ATTEMPTED TO FREE THE ADA PTER USING A HAMMER. WHILE STRIKING, THE ADAPTER, A CHIP BROKE FREE OFF THE ADAPTER, PRJECTING AND PUNCTURING THE OTHERS LEFT ABDOMAL.