Wyo. Stat. § 18-1-402: Duty of surveyors in making survey; joint report; findings conclusive if in agreement.

(a) The county surveyors shall:

(i) Mark the boundary line as located by them by placing or erecting at the end of each mile an easily discernible and durable monument upon which will be designated the point which it represents or locates;

(ii) Make a joint report of the boundary line agreed upon, attaching maps which show the location of the boundary line and all monuments placed or erected on the line.

(b) The report shall be signed and sworn to by each surveyor and one (1) copy shall be filed with the county clerk of each county. The line agreed on by the county surveyors is located and binding upon both counties.