---
kind: "section"
citation: "43 C.F.R. § 3837.21"
title: "43"
number: "3837.21"
heading: "How do I notify the delinquent co-claimant that I want to acquire his or her interests?"
url: "https://uscodex.org/cfr/43/3837.21"
---

# §3837.21. How do I notify the delinquent co-claimant that I want to acquire his or her interests?

- (a) You must give the delinquent co-claimant written notice by mail using registered or certified mail, return receipt requested, or by personal service; or
- (b) If, after diligent search, you cannot locate the delinquent co-claimant, you must publish notification in a newspaper nearest the location of the claims or sites at least once a week for 90 days.

## Notes

### Authority

Authority: 43 U.S.C. 2, 1201, 1457; 50 U.S.C. App. 501, 565; 30 U.S.C. 28.

### Source

Source: 68 FR 61078, Oct. 24, 2003, unless otherwise noted.