The Director of the Office of Mines and Minerals shall be a person thoroughly conversant with the theory and practice of coal mining but who is not identified with either coal operators or coal miners. The Director of the Office of Mines and Minerals must hold a certificate of competency as a mine examiner issued by the Illinois Mining Board.
The Manager of the Office of Mines and Minerals shall be a person who is thoroughly conversant with the theory and practice of coal mining in the State of Illinois.
20 ILCS 801/10-5