EMPLOYEE WAS WALKING UNDER A PART OF THE PLANT TO GO TURN OFF A VALVE. HE DUCKED UNDER A PIPE. HE DID NOT DUCK DOWN FAR ENOUGH AND STRUCK HIS HEAD ON THE HANDLE OF A VALVE. THE HANDLE WENT UND ER THE BRIM OF HIS HARD HAT AND STRUCK HIS FOREHEAD. HE RECEIVED A 2"" LACERATION WHICH REQUIRED SUTURES.