INJURED WAS ATTEMPTING TO REMOVE A FUEL FILTER FROM REFUGE FUEL PUMP. THE PIPE WRENCH SLIPPED AND SMASHED HIS LEFT RING FINGER BETWEEN THE WRENCH AND THE FILTER HOUSING. HE WAS TAKEN TO THE HO SPITAL WHERE XRAYS SHOWED THAT THE FINGER WAS BROKEN. HE ALSO RECEIVED 6 STITCHES TO CLOSE A LACERATION ON THAT FINGER.