Sterett Crane and Rigging used a Terex CC 2400-1 lattice boom crawler crane to replace lids on eight anaerobic digester tanks at the East and West Evansville wastewater treatment plants. With its 440 US ton (400 tonne) capacity, the Terex crane offered power to lift the heavy loads, and its Vario-Superlift structure feature proved to be the X-factor Sterett needed to manoeuvre about the site at full load.