0001130464-09-000208 10-Q 5 20090630 20090810 20090810 BLACK HILLS CORP /SD/ 0001130464 4911 460458824 SD 1231 10-Q 34 001-31303 091000504 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 form10q_3rdqtr-2009.htm FORM 10Q 3RD QTR 2009 EX-31.1 2 ex31_1.htm CEO CERTIFICATION EX-31.2 3 ex31_2.htm CFO CERTIFICATION EX-32.1 4 ex32_1.htm CEO SECTION 1350 CERTIFICATION EX-32.2 5 ex32_2.htm CFO SECTION 1350 CERTIFICATION