 RAPID CITY, S.D., Jan. 14, 2022 GLOBE NEWSWIRE -- Black Hills Corp. NYSE: BKH will announce its 2021 fourth quarter and full year earnings after the market closes Wednesday, Feb. 9, 2022, and will host a live conference call and webcast at 11 a.m. EST on Thursday, Feb. 10, 2022, to discuss the companys financial results. 