25 C.F.R. § 213.17 Government reserves right to purchase minerals produced.
Title 25 - Indians
In time of war or other public emergency any of the executive departments of the U.S. Government shall have the option to purchase at the prevailing market price on the date of sale all or any part of the minerals produced under any lease.
Title 25: Indians
PART 213—LEASING OF RESTRICTED LANDS OF MEMBERS OF FIVE CIVILIZED TRIBES, OKLAHOMA, FOR MINING
How To Acquire Leases
§ 213.17 Government reserves right to purchase minerals produced.

