Neb. Rev. Stat. § 23-1907: Neb. Rev. Stat. § 23-1907

It shall be the duty of the county surveyor in surveys made by him or her to perpetuate all original corners not at the time well marked, and all corners or angles that he or she may establish or reestablish, in a permanent manner by setting monuments containing ferromagnetic material, according to the instructions of the State Surveyor.