Wyo. Stat. § 33-29-903: Completion of "corner file".

A professional land surveyor shall complete, sign, and file with the county clerk where the corner is situated, a written record of corner establishment or restoration to be known as a "corner file" for every public land survey corner and accessory to such corner which is established, reestablished, monumented, remonumented, restored, rehabilitated, perpetuated or used as control in any survey by such surveyor, and within ninety (90) days thereafter, unless the corner and its accessories are substantially as described in an existing corner record filed in accordance with the provisions of W.S. 33-29-901 through 33-29-910.