The National Environmental Policy Act of 1969, referred to in subsec. (a), is Pub. L. 91–190, Jan. 1, 1970, 83 Stat. 852, which is classified generally to chapter 55 (§ 4321 et seq.) of this title. For complete classification of this Act to the Code, see Short Title note set out under section 4321 of this title and Tables.

The Mineral Leasing Act, referred to in subsec. (a), is act Feb. 25, 1920, ch. 85, 41 Stat. 437, which is classified generally to chapter 3A (§ 181 et seq.) of Title 30, Mineral Lands and Mining. For complete classification of this Act to the Code, see Short Title note set out under section 181 of Title 30 and Tables.