PURPOSE: The exchange of lands between the U.S. Fish and Wildlife Service (FWS) and Doyon, Limited is proposed to enhance the Yukon Flats National Wildlife Refuge of Alaska. Since the refuge was established in 1980, Doyon has been interested in acquiring federal oil and gas interests in the south-central portion of dedicated area. Under the terms of an agreement in principle between the FWS and Doyon, the U.S. government would receive fee title to at least 150,000 acres of Doyon lands, including both surface and subsurface rights, with priority fish and wildlife habitats that can be incorporated into the refuge. Doyon would receive fee title to approximately 110,000 acres of refuge lands, including both surface and subsurface rights, [...]