ON 4-30-02 AT ABOUT 9:40PM INJURED WAS ATTEMPTING TO HOOK THE PREP STACKER BELT TO THE ENDLOADER TO MOVE WHEN A LOUD THUNDER WAS HEARD. NO FLASHWAS SEEN. INJURED FELL BACKWARDS ON THE GROUND. HELP ARRIVED SOON, INJURED WAS BREATHING AND HAD A PULSE. THOUGHT HE WAS STRUCK BY LIGHTNING. AFTER TESTS, NO ELECTRICAL CHARGE WAS DETECTED. HAD OTHER PERSONAL MEDICAL PROBLEMS.