CFR›Title 15›Subtitle B›Chapter IX›Part 971›Subpart E ContainsSections 971.500–971.503CorpusDaily eCFRDisplayed edition2026-05-18Last updated2026-05-18 Subpart E—Resource Development Sections 971.500 § 971.500 General. 971.501 § 971.501 Resource assessment, recovery plan, and logical mining unit. 971.502 § 971.502 Conservation of resources. 971.503 § 971.503 Diligent commercial recovery. Previous D Subpart D—Issuance/Transfer: Terms, Conditions and Restrictions Next F Subpart F—Environmental Effects