EE WAS HELPING INSTALL A 54: RETURN IDLER ON A FIELD CONVEYOR. THE EE HAD ONE END PUT IN AND WAS ATTEMPTING TO PUT THE OTHER END IN WHEN THE CHAIN THEY WERE USING TO HELP LIFT THE IDLER IN PLA CE SLIPPED CAUSE THE IDLER TO FALL STRIKING THE EE IN THE FOREHEAD. THE EE RECEIVED A CUT ON HIS FOREHEAD, EE WAS TAKEN TO THE DR. EE RECEIVED FOUR STITCHES TO CLOSE THE CUT. EE WAS RELEASED