0001130464-08-000128 8-K 2 20080321 3.02 8.01 20080327 20080326 BLACK HILLS CORP /SD/ 0001130464 4911 460458824 SD 1231 8-K 34 001-31303 08713031 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_indeck.htm INDECK EARNOUT GRAPHIC 2 ballot.jpg GRAPHIC