EMPLOYEE WAS OPERATING THE SUPPLY MOTOR AT 5-A HEAD, IN THE TRACK ENTRY 60 FEET FROM CURVE WHEN THE ENGINE STALLED. ONE ENGINE COVER WAS PROPPED OPEN. WHEN HE RAISED THE OTHER LID, THE FIRST LID FELL AND STRUCK HIS LEFT HAND. HE WAS TAKEN TO THE E.R. WHERE STITCHES WERE USED TO CLOSE THE WOUND.