Montana Constitution, Article IX
Section 2. Reclamation. (1) All lands disturbed by the taking of natural resources shall be reclaimed. The legislature shall provide effective requirements and standards for the reclamation of lands disturbed.
(2) The legislature shall provide for a fund, to be known as the resource indemnity trust of the state of Montana, to be funded by such taxes on the extraction of natural resources as the legislature may from time to time impose for that purpose.
(3) The principal of the resource indemnity trust shall forever remain inviolate in an amount of one hundred million dollars ($100,000,000), guaranteed by the state against loss or diversion. 