0001130464-07-000237 10-Q 6 20070630 20070809 20070809 BLACK HILLS CORP /SD/ 0001130464 4911 460458824 SD 1231 10-Q 34 001-31303 071039620 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_2ndqtr-2007.htm BHC 2ND QTR FORM 10Q EX-10.3 2 ex_10-3.htm CREDIT AGREEMENT EX-31.1 3 ex_31-1.htm CEO CERTIFICATION EX-31.2 4 ex_31-2.htm CFO CERTIFICATION EX-32.1 5 ex_32-1.htm SECTION 1350 CEO CERTIFICATION EX-32.2 6 ex_32-2.htm SECTION 1350 CFO CERTIFICATION