{"data":{"id":"us/43-cfr-3863.1-2","jurisdiction":"us","citation":"43 CFR 3863.1-2","heading":"-2 Proof of improvements for patent.","body":"The proof of improvements must show their value to be not less than $500 and that they were made by the applicant for patent or his grantors. This proof should consist of the statement of two or more disinterested witnesses.","path":["Title 43—Public Lands: Interior","Subtitle B—Regulations Relating to Public Lands","CHAPTER II—BUREAU OF LAND MANAGEMENT, DEPARTMENT OF THE INTERIOR","SUBCHAPTER C—MINERALS MANAGEMENT (3000)","PART 3860—MINERAL PATENT APPLICATIONS","Subpart 3863—Placer Mining Claim Patent Applications"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-43.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:15Z","sha256":"25eea394f7a0c82fc576aced42e598377cecd77c870e2ec657dd9c07f7ad8890","source_id":"us-cfr","stale":true,"prev":"us/43-cfr-3863.1-1","next":"us/43-cfr-3863.1-3"},"notice":"GroundRules: Original legal text. Not legal advice."}