under the Montana Wilderness Study Act of 1977 (Public Law
95–150; 91 Stat. 1243), 9 wilderness study areas comprising a total of 973,000 acres of land in the State of Montana were set aside for the Secretary of Agriculture to evaluate the suitability of the wilderness study areas for designation as wilderness in accordance with the Wilderness Act (
16 U.S.C. 1131 et seq.), with the evaluation to be completed not later than 5 years after the date of enactment of the Montana Wilderness Study Act of 1977 (Public Law
95–150; 91 Stat. 1243);