Each mine inspector shall, before entering upon the discharge of his duties, give a surety bond in the sum of five thousand dollars ($5,000), conditioned for the faithful discharge of his duties; and shall take an oath, or make affirmation that he will discharge his duties with impartiality and fidelity, to the best of his knowledge and ability. Such bond and oath shall be filed in the office of the Secretary of the Commonwealth. No person who is acting as manager or agent of any coal mine, or as mining engineer, or who is directly or indirectly interested in operating any coal mine shall at the same time act as mine inspector.
52 P.S. § 70-114