43 CFR § 3453.2-1
Application
June 11, 2020
Applications for approval of any transfer of a lease, preference right lease application or exploration license or any interest in a lease or license, whether by direct assignment, working agreement, transfer of royalty interest, sublease, or otherwise, shall be filed within 90 days from final execution.
[44 FR 42635, July 19, 1979, as amended at 47 FR 33147, July 30, 1982]