Mo. Rev. Stat. § 446.110: Surveyors to re-mark decayed corners, when.

The county surveyor shall, if required by the party owning or being interested in such survey make a survey thereof, and cause to be planted a stone or post at each of the decayed or obliterated corners, and shall be governed in his survey, and in planting such stone or post at the corners, by the depositions which shall have been taken and delivered to him in relation thereto.