---
kind: "section"
citation: "43 C.F.R. § 4.20"
title: "43"
number: "4.20"
heading: "Purpose and scope."
url: "https://uscodex.org/cfr/43/4.20"
---

# §4.20. Purpose and scope.

- (a) **Purpose.** The purpose of this subpart is to establish general rules of practice, where appropriate.
- (b) **Scope.** General rules applicable to proceedings before OHA are set forth in subparts [A](/cfr/43/subpartA.md) and [B](/cfr/43/subpartB.md) of this part. Rules applicable to particular units or a particular type of proceeding are set forth in other subparts of this part. Wherever there is any conflict between one of the general rules in subparts [A](/cfr/43/subpartA.md) or [B](/cfr/43/subpartB.md) of this part and a rule in another subpart of this part, the specific rule will govern. Other laws, regulations, and policies of the Department may also address and be applicable to a particular type of proceeding. In addition, [part 1](/cfr/43/part1.md) of this subtitle, which regulates practice before the Department of the Interior, applies to proceedings before OHA.

## Notes

### Source

Source: 90 FR 2390, Jan. 10, 2025, unless otherwise noted.

### Authority

Authority: 5 U.S.C. 301, 503-504; 25 U.S.C. 9, 372-74, 410, 2201 et seq.; 43 U.S.C. 1201, 1457; Pub. L. 99-264, 100 Stat. 61, as amended.

### Source

Source: 36 FR 7186, Apr. 15, 1971, unless otherwise noted.