The body was designed and manufactured by Westech for a Liebherr T282C Ultra Class haul truck. It set the record at 447.3 tons, or a volume of 615.2 cubic yards. The Guinness World Book of Records officially recognized the record July 19, 2011. Westech ( is recognized as a world leader in engineering and manufacturing of off highway, mining truck bodies and is based in Casper, Wyo.