CFR›Title 30›Chapter I›Part 57›Subpart T›Subject Group Mine Categorization ContainsSections 57.22003–57.22005CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 Sections 57.22003 § 57.22003 Mine category or subcategory. 57.22004 § 57.22004 Category placement or change in placement. 57.22005 § 57.22005 Notice and appeal of placement or change in placement. Previous Illumination Illumination Next Underground Retorts Underground Retorts