EMPLOYEE CLAIMS THAT HE INJURED HIS LEFT MIDDLE FINGER WHILE ATTEMPTING TO OPEN A MANUAL GATE ON A SCREW CONVEYOR BY STRIKING IT WITH A HAMMER. HE FURTHER CLAIMS THAT WHEN HE SWUNG THE HAMMER, THE HAMMER HIT THE TIP OF HIS LEFT MIDDLE FINGER. HE WAS RELEASED TO RETURN TO LIGHT DUTY AFTER THE LOSS OF ONE DAY OF WORK.