The company said that an executive search firm has been retained to assist in the selection of a new CFO. In the interim, the corporate duties formerly fulfilled by Mr Thies will be assumed by David Emery, chairman, president and CEO of the company.
Mr Thies said: My years with Black Hills Corporation were challenging and fulfilling. I have made the decision to resign, however, and for reasons including personal considerations and my health, I will not be able to provide a transition for the company and for my replacement.
