43 CFR § 3452.3
Termination
June 11, 2020
(a) Any lease issued or readjusted after August 4, 1976, shall be terminated if the lessee does not meet the diligent development requirements.
(b) Should a lease be relinquished, cancelled or terminated for any reason, all deferred bonus payments shall be immediately payable and all rentals and royalties, including advance royalties, already paid or due, shall be forfeited to the United States.
[44 FR 42635, July 19, 1979, as amended at 47 FR 33147, July 30, 1982]