EE SHUT DOWN THE GENERATOR FOR THE END OF THE SHIFT. AS HE WALKED OUT OF THE GENERATOR TRAILER, HE STEPPED ON TO THE PLATFORM AT THE TOP OF THE STAIRS. THE PLATFORM WAS COVERED WITH ABOUT 1""OF SNOW. AS EE STEPPED ON THE SOLID METAL SECTION OF THE PLATFORM, HIS FEET WENT OUT FROM UNDER HIM AND HE FELL DOWN, STRUCK HIS ARM WHEN HE LANDED AND THEN HE SLID DOWN THE STAIRS.