Classic Machines ScrapersClassic Machines: Motor graders of LeTourneau-WestinghouseContrafed PUblishingOctober 19, 2015June 12, 2020 by Contrafed PUblishingOctober 19, 2015June 12, 2020 Prior to its acquisition by Westinghouse Air Brake Co (WABCO), RG LeTourneau Inc, had tried unsuccessfully to design and develop a motor grader to complement...