25 C.F.R. § 215.3 Manner and time of royalty payments.
Title 25 - Indians
All royalties belonging to the lessor shall be paid to the superintendent of the Quapaw Agency at Miami, Okla., or such other official as the Secretary of the Interior may designate, for the benefit of the lessor, not later than 15 days from the 1st of each month for ore and concentrates sold during the preceding month.
Title 25: Indians
PART 215—LEAD AND ZINC MINING OPERATIONS AND LEASES, QUAPAW AGENCY
§ 215.3 Manner and time of royalty payments.