EMPLOYEE WAS USING A PRYBAR TO TIGHTEN THE WINGNUTS ON FLANGE. IT WAS RAINING AT THE TIME AND HIS RUBBER GLOVES AND THE PRY-BAR WERE WET. HIS RIGHT HAND SLIPPED FROM THE PRY-BAR AND HIS HAND S TRUCK AN ADJACENT FLANGE. THIS RESULTED IN A LACERATION TO HIS RIGHT HAND THAT REQUIRED 13 SUTURES TO CLOSE. NO LOST TIME OR RESTRICTED ACTIVITY.