MEMBER WAS MAKING A BELT SPLICE ON TUES NOV 28. HE WAS CUTTING THE BELT WITH A STANDARD UTILITY KNIFE. HE HAD HIS LEFT HAND ON THE BELT RAIL WHILE HE WAS CUTTING THE BELT. THE KNIFE SLIPPED OFF THE BELT CUTTING THE MEMBER'S LEFT THUMB. HEWAS TRANSPORTED TO THE HOSPITAL BY AMBULANCE. HE RECEIVED 5 STITCHES AND WAS RELEASED FOR WORK.