INJURED WAS INSPECTING THE INTALLATION OF A GRIZZLY UNIT 141. HE WAS STANDING ON UNIT 150, 34 INCHES ABOVE THE FLOOR. HE REACHED IN UNIT 141 TO GET A PAPER TAG. AS HE REMOVED THE TAG HIS ARM F ROM THE CHUTE HE FELL OFF THE EASTSIDE OF UNIT 150. INVESTIGATION SHOWS HE MAY HAVE HAD HIS FACE IN THE ATMOSPHERE WHICH CAUSED HIM TO FALL.