PERSON WAS REPLACING BROKEN BOLT IN SPRAY BAR SUPPORT ON HEADGATE END OF SHEAR, PERSON WAS LIFTING UP ON SPRAY BAR TO ALIGN BOLT HOLE IN SUPPORT, BAR FELL AND CAUGHT HIS LITTLE FINGER ON RT. HAND BETWEEN SPRAY BAR AND JACK. PERSON WENT TO E.R. ON 2/10/02 FOR TREATMENT. 1ST DAY OFF 2/13/02.