CFR›Title 30›Chapter I›Part 57›Subpart A›Subject Group Procedures ContainsSection 57.1000CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 Sections 57.1000 § 57.1000 Notification of commencement of operations and closing of mines. Previous 57.2 § 57.2 Definitions.