43 C.F.R. § 4.1165 Answer.
Title 43 - Public Lands: Interior
(a) Where an application for review is filed by a permittee, OSM as well as any other person granted leave to intervene pursuant to §4.1110 shall file an answer within 20 days of service of a copy of such application. (b) Where an application for review is filed by a person other than a permittee, the following shall file an answer within 20 days of service of a copy of such application— (1) OSM; (2) The permittee; or (3) Any other person granted leave to intervene pursuant to §4.1110.
Title 43: Public Lands: Interior
PART 4—DEPARTMENT HEARINGS AND APPEALS PROCEDURES
Subpart L—Special Rules Applicable to Surface Coal Mining Hearings and Appeals
Review of Section 521 Notices of Violation and Orders of Cessation
§ 4.1165 Answer.