EMPLOYEE REPORTED: HE & A CO-WORKER WERE ATTEMPTING TO THROW AN EMPTY GREASE BARREL OVER A HANDRAIL AT THE 2ND FLOOR OF THE SLOPE BELT HEAD HOUSE. HIS MIDDLE FINGER OF LEFT HAND CONTACTED A SHARP EDGE ON THE BARREL RESULTING IN A 1/4"" LACERATION TO THE TIP OF THE FINGER. HE RECEIVED 4 SUTURES TO CLOSE THE WOUND.