43 CFR 3160.0-1: -1 Purpose.

The regulations in this part govern operations associated with the exploration, development and production of oil and gas deposits from—

(a) Leases issued or approved by the United States;

(b) Restricted Indian land leases; and

(c) Those leases under the jurisdiction of the Secretary of the Interior by law or administrative arrangement including the National Petroleum Reserve-Alaska (NPR-A). However, provisions relating to suspension and royalty reductions contained in subpart 3165 of this part do not apply to the NPR-A.