30 U.S.C. § 21 : — MINERAL LANDS AND MININGMINERAL LANDS AND REGULATIONS IN GENERAL — Mineral lands reserved TEXT PDF In all cases lands valuable for minerals shall be reserved from sale, except as otherwise expressly directed by law. 30 U.S.C. § 21 R.S. §2318. EDITORIAL NOTES CODIFICATIONR.S. §2318 derived from act July 4, 1866, ch. 166, §5, 14 Stat. 86.