43 C.F.R. § 4.400
As used in this subpart:
Administrative law judge means an administrative law judge in the Office of Hearings and Appeals, appointed under 5 U.S.C. 3105 .
BIA means the Bureau of Indian Affairs.
BLM means the Bureau of Land Management.
Board means the Interior Board of Land Appeals.
BOEM means the Bureau of Ocean Energy Management.
BSEE means the Bureau of Safety and Environmental
Bureau or Office means BIA, BLM, BOEM, BSEE, ONRR, the Deputy Assistant Secretary-Natural Resources Revenue, or any successor organization, as appropriate.
Last address of record means the address in a person's most recent filing in an appeal or, if there has not been any filing, the person's address as provided in the Bureau or Office decision under appeal.
ONRR means the Office of Natural Resources Revenue.
Office or officer includes "administrative law judge" or "Board" where the context so requires.
Party includes a party's representative(s) where the context so requires.
Secretary means the Secretary of the Interior or an authorized representative.
43 C.F.R. §4.400