0001130464-04-000276 8-K 2 20040809 12 20040809 BLACK HILLS CORP /SD/ 0001130464 4911 460458824 SD 1231 8-K 34 001-31303 04961180 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_080904.htm 8-K DATED 8-9-04 EARNING RELEASE EX-99.A 2 ex99_form8k-080904.htm PRESS RELEASE DATED 8-9-04