EMP WAS CLOSING SLIDE GATE ON #2 CALCINER DISCHARGE INTO HOT SCREW. HE HAD TO CROSS OVER TO THE OPPOSITE SIDE TO FINISH OPENING GATE. AS HE PASSED UNDER THE HOT SCREW, HOT CLAY FELL FROM CHUTE AND HIT HIS NECK, BACK OF HEAD AND EARS, CAUSING 2ND DEGREE BURNS.