THE EMPLOYEE WAS CLEANING COMPONENTS OF THE UNDERGROUND BATCH PLANT (USED FOR MAKING CEMENTED ROCK) HE SAT ON SOME DRIED CEMENT FOR A PERIOD OF TIME AND LATER DROVE A HAUL TRUCK, WHICH PROBABL Y RUBBED THE CEMENT INTO HIS BUTTOCKS. HE USED STERILE WATER TO WASH HIS BUTT UNDERGROUND, BUT DID NOT CHANGE HIS CLOTHES UNTIL THE END OF THE SHIFT. ON RESTRICTED WORK.