One of my first jobs in the late 60's early 70's was operating elevator scraper, I operated many kinds but one was a International Harvester, its pull was actually a farm field tractor, it was really narrow, in fact I turned one over and ended up with a neck brace for 6 weeks but I was alive. when I started working again they had me run a Cat elevator scrapper, They said it was the biggest they had, I think something like 37 yards maybe, can anyone tell me which model that may have been. Just a old operator looking back.