EE WAS DOING ROUTINE MAINTENANCE ON TRUCK AT UNDERGROUND SHOP BY FILLING DIFFERENTIALS WITH 90 WT OIL. IN THE PROCESS PRESSURE FROM WITHIN DIFFERENTIAL CAUSED THE OIL TO SPRAY OUT INTO THE EE S FACE AND TO RUN INTO EE EYES AND EARS. EE S EYES AND EARS WERE THOROUGHLY CLEANED, WITH THE EYES BEING FLUSHED OUT SEVERALS TIMES AS PRECAUTIONARY MEASURE, THE EE WAS SENT TO DR. EXAMING AND