EE WAS HELPING ANOTHER EE CHANGE BUCKET TEETH ON TRACK HOE 52B. 4 OF THE 6 TEETH CAME OFF WITH SOME EFFORT, THE LAST 2 WERE NOT COMING OFF EVEN WITH A LOT OF EFFORT, FOLLOWING PROPER MAINT PROCEDURES OF USING A HAMMER TO STRIKE THE TOOTHTO FREE THE PIN WAS USED. FRAGMENT FLEW OFF FROM THE TOOTH SOME DISTANCE FROM THE HAMMER STRIKE EE IN HIS LEFT THIGH.