C.F.R. » Title 43 » 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

43 C.F.R. § 3863.1-2

Proof of improvements for patent

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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.