30 U.S.C. § 528 : US Code - Section 528: Waiver and relinquishment of mineral rights

Search 30 U.S.C. § 528 : US Code - Section 528: Waiver and relinquishment of mineral rights

The owner or owners of any mining claim heretofore located may,
at any time prior to issuance of patent therefor, waive and
relinquish all rights thereunder to Leasing Act minerals. The
execution and acknowledgment of such a waiver and relinquishment by
such owner or owners and the recordation thereof in the office
where the notice or certificate of location of such mining claim is
of record shall render such mining claim thereafter subject to the
reservation referred to in section 524 of this title and any patent
issued therefor shall contain such a reservation, but no such
waiver or relinquishment shall be deemed in any manner to
constitute any concession as to the date of priority of rights
under said mining claim or as to the validity thereof.