CONCRETE WAS LODGED IN THE RIPPER CYLINDER MOUNT AND THEE USING A PRY BAR AND A 12# HAMMER TO DISLODGE THE CONCRETE. WHILE STRIKING THE BAR WITH THE HAMMER THE HEAD OF THE HAMMER STRUCK THE CY LINDER DEFLECTING THE HANDLE INTO THE RIPPER SHANK CAUSING THE LACERATION TO THE FINGER. SUTURES WERE REQUIRED.