CFR›Title 43›Subtitle B›Chapter II›Part 3833›Subpart B›43 CFR 3833.20 Citation43 CFR 3833.20CorpusDaily eCFRDisplayed edition2026-08-12Last updated2026-08-12 § 3833.20 Amending mining claims and sites. Next 3833.21 § 3833.21 When may I amend a notice or certificate of location?