Form ARS BLACK HILLS CORP /SD/ For: Dec 31
Form DEF 14A BLACK HILLS CORP /SD/ For: Mar 12
Form 4 BLACK HILLS CORP /SD/ For: Feb 18 Filed by: Evans Linden R
Form 5 BLACK HILLS CORP /SD/ For: Dec 31 Filed by: Prochazka Scott M
Form 4 BLACK HILLS CORP /SD/ For: Feb 12 Filed by: Evans Linden R