CFR›Title 43›Subtitle B›Chapter II›Part 3100›Subpart 3100 ContainsSections 3100.3–3100.10; Subject groups Drainage–OptionsCorpusDaily eCFRDisplayed edition2026-08-12Last updated2026-08-12 Subpart 3100—Onshore Oil and Gas Leasing: General Contents 3100.3 § 3100.3 Authority. 3100.5 § 3100.5 Definitions. 3100.9 § 3100.9 Information collection. 3100.10 § 3100.10 Helium. Drainage Drainage Sections 3100.21–3100.22 Options Options Sections 3100.31–3100.40 Next 3101 Subpart 3101—Issuance of Leases