43 C.F.R. § 3821.3 Requirement for filing statement of assessment work.
Title 43 - Public Lands: Interior
The owner of an unpatented mining claim, mill site, or tunnel site located on O and C lands may either: (a) Perform and record proof of annual assessment work if qualified as a small miner under part 3835 of this chapter; or (b) Pay an annual maintenance fee of $100 per unpatented mining claim, mill site, or tunnel site under part 3834 of this chapter. [68 FR 61064, Oct. 24, 2003]
Title 43: Public Lands: Interior
PART 3820—AREAS SUBJECT TO SPECIAL MINING LAWS
Subpart 3821—O and C Lands
§ 3821.3 Requirement for filing statement of assessment work.