43 C.F.R. § 3100.3
(a)
(2) Exceptions. The following lands are not subject to lease.
(b)
(2) Exceptions. The following lands are not subject to lease.
(g)
(4) Units of the National Park System. The Secretary is authorized to permit mineral leasing in the following units of the National Park System if the Secretary finds that such disposition would not have significant adverse effects on the administration of the area and if lease operations can be conducted in a manner that will preserve the scenic, scientific and historic features contributing to public enjoyment of the area, pursuant to the following authorities:
(i)