Mont. Code Ann. § 90-6-201

The purposes of this part are to assist local governmental units that have been required to expand the provision of public services as a consequence of large-scale development of coal mines and coal-using energy complexes or as a consequence of a major decline in coal mining or in the operation of coal-using energy complexes, to assist in the construction and reconstruction of designated portions of highways that serve the area affected by the large-scale development, to support county land planning, and to support public schools throughout the state.