N.D. Cent. Code § 38-14.1-38

No employee of the commission performing any function or duty under this chapter may have a direct or indirect financial interest in any underground or surface coal mining operation. Whoever willfully violates this section is, upon conviction, subject to the penalty provided in subsection 5 of section 38-14.1-32. The commission shall promulgate regulations to establish methods by which the provisions of this section will be monitored and enforced by the commission, including appropriate provisions for the filing by such employees and the review of statements and supplements thereto concerning any financial interests which may be affected by this section.