International Harvester tractor factory Doncaster South Yorkshire International Harvester operated a plant on Wheatley Hall Road from and the Doncaster plant helped shape the company into a world renowned brand In International sold its agricultural division to Tenneco who then merged with Case Tractor production continued at the site until when the factory closed and production was moved to Italy by its new owners ARGO spa and years of tractor production in Doncaster came to an end