1 united states securities and exchange commission washington dc 20549 form 10 k annual report pursuant to section 13 or 15 d of the act 1934 for fiscal year ended december 31 2004 transition period from ___________ file number 001 31303 black hills corporation incorporated in south dakota irs identification 46 0458824 625 ninth street rapid city 57701 registrant s telephone including area code 605 721 1700 registered 12 b name each title class on which common stock 00 par value new york indicate by check mark whether has filed all reports required be during preceding months such shorter that was 2 been subject filing requirements past 90 days yes x no ___ if disclosure
