Sec. 1.621-1 Payments to encourage exploration, development, and mining for defense purposes. [Removed]
[Adopted by T.D. 6281, 22 FR 10450, Dec. 21, 1957; republished by T.D. 6500, 25 FR 11737, Nov. 26, 1960. Removed by T.D. 9849, 84 FR 9231-9239, Mar. 14, 2019.]