; or (B) be reimbursed for the fair market value of any significant improvements made to such lands; and (2) may not be charged with willful trespass onto such land unless the person used such lands with the knowledge that the lands should be classified as Federal land. 4. Definitions For the purposes of this Act: (1) Resurvey The term resurvey means an official rerunning and remarking intended to supersede the records of the original survey. (2) Secretary concerned The term Secretary concerned means— (A) the Secretary of the Interior, when referring Federal land under the administrative jurisdiction of the Bureau of Land Management or the National Park Service; and (B) the Secretary of Agriculture, when referring to Federal land under the administrative jurisdiction of the Forest Servcie.