43 CFR §3430.6-3
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Preference right leases shall be issued for a term of 20 years and for so long thereafter as coal is produced in commercial quantities as defined in § 3483.1 of this title. Each lease shall be subject to readjustment at the end of the first 20-year period and at the end of each period of 10 years thereafter in accordance with subpart 3451 of this title.