0001130464-05-000371 8-K 2 20050930 1.01 2.03 20051004 20051003 BLACK HILLS CORP /SD/ 0001130464 4911 460458824 SD 1231 8-K 34 001-31303 051118866 625 9TH STREET PO BOX 1400 RAPID CITY SD 57709 6057212343 625 9TH STREET PO BOX 1400 RAPID SD 57709 BLACK HILLS HOLDING CORP 20001222 8-K 1 form8k_enserco9-30.htm ENSERCO CREDIT FACILITY 9-30-05 GRAPHIC 2 ballot.jpg GRAPHIC