1. Short title This Act may be cited as the Legacy Mine Cleanup Act of 2024 . 2. Office of Mountains, Deserts, and Plains (a) Definitions In this section: (1) Administrator The term Administrator means the Administrator of the Environmental Protection Agency. (2) Appropriate committees of Congress The term appropriate committees of Congress means— (A) the Committee on Appropriations of the Senate; (B) the Committee on Energy and Natural Resources of the Senate; (C) the Committee on Environment and Public Works of the Senate; (D) the Committee on Health, Education, Labor, and Pensions of the Senate; (E) the Committee on Indian Affairs of the Senate; (F) the Committee on Appropriations of the House of Representatives; (G) the Committee on Energy and Commerce of the House of Representatives; (H) the Committee on Transportation and Infrastructure of the House of Representatives; (I) the Committee on Natural Resources of the House of Representatives