CFR›Title 43›Subtitle B›Chapter II›Part 3870 ContainsSubparts 3871–3873CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 PART 3870—ADVERSE CLAIMS, PROTESTS AND CONFLICTS Subparts 3871 Subpart 3871—Adverse Claims Sections 3871.1–3871.6 3872 Subpart 3872—Protests, Contests and Conflicts Sections 3872.1–3872.5 3873 Subpart 3873—Segregation Sections 3873.1–3873.3 Authority30 U.S.C. 30; 43 U.S.C. 1201, 1457, 1701 et seq. Previous 3860 Part 3860—Mineral Patent Applications Next 3900 Part 3900—Oil Shale Management—General