THE EE WAS ASSISTING IN PLACING CONCRETE FRO A PLANT EXPANSION PROJECT ON THE AFTERNOON OF THURSDAY HE WAS INSTRUCTED TO ASSIST IN LEVELING THE CONCRETE IN FRONT OF THE SCREED. THE POUR LAST F ROM APPROX. 200 TO 400 PM THE EE REPORTED TO WORK THE NEXT DAY ON SCHEDULE, AND COMPLETED A FIRST AID/CPR CLASS. MONDAY, HE REPORTED TO WORK ON SCHDULE AND PERFORMED HIS USUAL DUTIES. DURING