EE WAS INSTALLING THE ENGINE COMPARTMENT SIDE DOOR ON A DOZER. DOOR WEIGHT ~30LB. HE WAS HOLDINGIT IN PLACE WITH ONE HAND & ONE KNEE. DOOR SLIPPED & FELL, CATCHING HIS LEFT LITTLE FINGER BETWE EN THE DOZER TRACK CLEAT & THE DOOR. THIS RESULTED IN A FRACTURE WITH LACERATION AT THE FIRST JOINT OF THE FINGER.