United States Lime & Minerals, Inc. announced that M. Michael Owens, the company's Vice President, Chief Financial Officer, Secretary and Treasurer, has resigned from his positions as the company's Vice President and Chief Financial Officer, effective September 18, 2017, in anticipation of his full retirement at a future date. Mr. Owens will continue to be employed for a time as the company's Secretary and Treasurer in order to provide for an orderly transition, at a reduced annual base salary of $100,000. The company also announced the appointment of Michael L. Wiedemer as the company's Vice President and Chief Financial Officer, effective September 18, 2017.

Mr. Wiedemer has served as corporate controller for TearLab Corp. since September 2015.