Code of Federal Regulations Title 43. Public Lands:  Interior § 43.3101.5–1 Wildlife refuge lands

(a) Wildlife refuge lands are those lands embraced in a withdrawal of public domain and acquired lands of the United States for the protection of all species of wildlife within a particular area. Sole and complete jurisdiction over such lands for wildlife conservation purposes is vested in the Fish and Wildlife Service even though such lands may be subject to prior rights for other public purposes or, by the terms of the withdrawal order, may be subject to mineral leasing.

(b) No offers for oil and gas leases covering wildlife refuge lands shall be accepted and no leases covering such lands shall be issued except as provided in § 3100.2 of this title. There shall be no drilling or prospecting under any lease heretofore or hereafter issued on lands within a wildlife refuge except with the consent and approval of the Secretary with the concurrence of the Fish and Wildlife Service as to the time, place and nature of such operations in order to give complete protection to wildlife populations and wildlife habitat on the areas leased, and all such operations shall be conducted in accordance with the stipulations of the Bureau on a form approved by the Director.