; 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 The term Secretary means the Secretary of the Interior, acting through the Director of the Bureau of Land Management.