Mont. Code § 17-5-712
Either the legislative act providing for the issuance of coal severance tax bonds or the trust indenture may contain provisions for protecting and enforcing the rights and remedies of the bondholders as are reasonable, proper, and not in violation of law, including covenants setting forth the duties of the state, the board of examiners, and the departments, boards, or agencies of state government in relation to the acquisition, construction, improvement, maintenance, operation, repair, and insurance of the projects financed with the proceeds of coal severance tax bonds and the custody, safeguarding, and application of all money. The trust indenture may set forth the rights and remedies of the bondholders as is customary in trust indentures, deeds of trusts, and mortgages securing bonds or debentures of corporations. No enumeration of particular powers granted by this section impairs any general grant of power contained in this part.
§ 17-5-712, MCA