EE WAS USING A WRENCH TO TIGHTEN A BOLT THAT ATTACHED A SIGN TO A POST. THE WRENCH ""SLIPPED"", HIS HAND SLID DOWN THE SHARP METAL EDGE OF THE SIGN RESULTING IN AN INCISION WOUND. SUTURES WERE R EQUIRED TO CLOSE THE WOUND. EE RETURNED TO WORK HIS NEXT SCHUDLED SHIFT WITHOUT RESTRICTIONS.