0001130464-05-000320 10-Q 5 20050630 20050809 20050809 BLACK HILLS CORP /SD/ 0001130464 4911 460458824 SD 1231 10-Q 34 001-31303 051008077 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 10-Q 1 form10q2ndqtr.htm 10Q 2ND QTR 2005 EX-31.1 2 ex31-1_10q605bhc.htm CEO CERTIFICATION EX-31.2 3 ex31-2_10q605bhc.htm CFO CERTIFICATION EX-32.1 4 ex32-1_10q605bhc.htm SECTION 1350 CEO CERTIFICATION EX-32 5 ex32-2_10q605bhc.htm SECTION 1350 CFO CERTIFICATION