EE NOTICED THAT A BOLT WAS LOOSE ON A DIGESTER FEED PUMP THAT WAS IN SERVICE. HIS GLOVED RIGHT HAND WAS CAUGHT BY THE PUMP STRIKING ARM AND HIS RIGHT INDEX FINGER WAS CAUGHT BETWEEN THE STROKE ARM AND THE PUMP HOUSING. THE LACERATION REQUIRED 30 STITCHES TO CLOSE. NO LOST TIME, RESTRICTEDDUTY ONLY.