CFR›Title 45›Subtitle B›Chapter VI›Part 673 ContainsSections 673.1–673.5CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 PART 673—ANTARCTIC NON-GOVERNMENTAL EXPEDITIONS Sections 673.1 § 673.1 Purpose of regulations. 673.2 § 673.2 Scope. 673.3 § 673.3 Definitions. 673.4 § 673.4 Environmental protection information. 673.5 § 673.5 Emergency response plan. Authority16 U.S.C. 2401 et. seq.Source66 FR 42451, Aug. 13, 2001, unless otherwise noted. Previous 672 Part 672—Enforcement and Hearing Procedures Next 674 Part 674—Antarctic Meteorites