EE WAS CLEANING BUILDUP INSIDE OF C-40 CHUTE WITH THE ENTRANCE DOOR RAISED UP INTO A VERTICAL POSITION. EE WAS GRIPPING A PRY BAR, APPROX. 4 FT. LONG WITH BOTH HANDS ON THE PRY BAR. THE SOUTH WIND BLEW THE DOOR SHUT FALLING AGAINST HIS LEFT HAND, MIDDLE FINGER. EE REPORTED THE ACCIDENT ON 9/13/04, BUT SAID HE WAS FINE. MONDAY, 10/11/04, EE REQUESTED MEDICAL EVAL.