Wyo. Stat. § 29-7-106: Priority of lien.

(a) A lien pursuant to W.S. 29-7-101 through 29-7-106 except as otherwise specifically provided therein shall be prior to all other liens, encumbrances and security interests if the property claimed is in possession of the lien claimant.

(b) If the property is not in possession of the lien claimant, a lien under W.S. 29-7-101 through 29-7-106 shall be prior to all other liens, encumbrances and security interests, except for a subsequent lien claimant in possession under W.S. 29-7-101 through 29-7-106 or a lien created under W.S. 29-8-102 relating to liens for the production of farm products under contracts executed, entered into, renewed or substantively amended after July 1, 2001.