All Federal lands and interests in lands within the Badlands Air Force gunnery range that are outside the boundaries of the park, and that have been declared excess to the needs of the Department of the Air Force, and that are not purchased by former owners under section 441l(b) of this title, and all lands that have been acquired by the United States under authority of title II of the National Industrial Recovery Act of June 16, 1933 (48 Stat. 200), and subsequent relief Acts, situated within the Pine Ridge Indian Reservation, administrative jurisdiction over which has heretofore been transferred by the President from the Secretary of Agriculture to the Secretary of the Interior by Executive Order Numbered 7868, dated April 15, 1938, shall be subject to the following provisions of this section.

Any former Indian owner of land that is within the Badlands Air Force gunnery range and outside the boundaries of the park and that has not been declared excess to the needs of the Department of the Air Force on August 8, 1968, may, within the period specified in section 441l(b)(5) of this title, elect (i) to purchase an available tract of land described in subsection (a) of substantially the same value, or (ii) to purchase the tract formerly owned by him at such time as such tract is declared excess and transferred to the Secretary of the Interior as provided in section 441l(a) of this title.

Any former Indian owner of a tract of land within the boundaries of the park that was acquired by the United States for the Badlands Air Force gunnery range, and that is transferred to the Secretary of the Interior pursuant to section 441k of this title, may, within the period specified in section 441l(b)(5) of this title, elect (i) to acquire from the Secretary of the Interior a life estate in such tract at no cost, subject to restrictions on use that may be prescribed in regulations applicable to the park, or (ii) to purchase an available tract of land described in subsection (a) of substantially the same value.

Purchases under subsection (b) and clause (ii) of subsection (c) of this section shall be made on the terms provided in section 441l(b) of this title.