0001130464-09-000286 10-Q 6 20090930 20091109 20091109 BLACK HILLS CORP /SD/ 0001130464 4911 460458824 SD 1231 10-Q 34 001-31303 091167524 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 BHC 10Q 3RD QTR 2009 EX-10 2 ex_10.htm ENSERCO CREDIT AGREEMENT EX-31.1 3 ex31_1.htm CEO CERTIFICATION EX-31.2 4 ex31_2.htm CFO CERTIFICATION EX-32.1 5 ex32_1.htm SECTION 1350 CEO CERTIFICATION EX-32.2 6 ex32_2.htm SECTION 1350 CFO CERTIFICATION