50 CFR § 29.1 - 29.220 - The National Wildlife Refuge System - Land Use Management.

This Part of Title 50 lays down regulations regarding the authorization of public or private economic use of the natural resources of any national wildlife refuge where the use contributes to the achievement of the national wildlife refuge purposes or the National Wildlife Refuge System mission. The economic use may be authorized by appropriate permit only when the use on a national wildlife refuge is compatible. Permits for economic use contain such terms and conditions for the proper administration of the resources. Economic use in this section includes but is not limited to grazing livestock, harvesting hay and stock feed, removing timber, firewood or other natural products of the soil, removing shell, sand or gravel, cultivating areas, or engaging in operations that facilitate approved programs on national wildlife refuges.
Furthermore, the regulations in this Part include cooperative land agreements in aid of or benefit to the wildlife management of the area; fees and charges for the grant of privileges on wildlife refuge areas and for the sale of products taken therefrom; management of non-Federal mineral, oil and gas rights; operation standards, such as for the protection of fish, wildlife, and plants; prohibited acts and penalties; apeeal to a decision made by the Service; and public access to information on oil and gas activities on refuge lands.