EE WAS IN PROCESS OF REMOVING IMPELLAR FROM SHAFT.EE HAD LEFT HAND UNDER THE IMPELLER WHEN THE IMPELLER CAME OFF THE SHAFT, EE WAS UNABLE TO TO HOLD THE IMPELLER & THEREFORE A PIECE OF BEAM UNDER THE IMPELLER & WHEN EE DROPPED THE IMPELLER HIS L HAND WAS CAUGHT & LAST DIGIT OF FINGER WAS CUT.