Mobile machinery is defined as heavy equipment, except shop or hand tools, which is self propelled, towed or hauled and used primarily in construction and maintenance of roads, bridges, ditches, buildings, or land reclamation.
Mobile Machinery Registration Requirements
If operating mobile machinery in Natrona County you must register your equipment with a mobile machinery sticker, purchased at the office of the County Treasurer. Wyoming contractors are required to list all such equipment upon the tax rolls, as well as an annual purchase of a mobile machinery sticker. Out of state contractors may obtain registration for any period of less than twelve (12) months. All
machinery brought into the state must be registered. Exemptions apply only to demonstrate the operation of equipment to prospective buyers, not to exceed a period of seven (7) calendar days.