43 CFR § 3475.2
Duration of leases
June 11, 2020
Leases shall be issued for a period of 20 years and so long thereafter as the condition of continued operation is met. If the condition of continued operation is not met the lease shall be cancelled as provided in §3452.2 of this title.
[44 FR 42643, July 19, 1979. Redesignated at 47 FR 33151, July 30, 1982]