On May 12 at about 2:20pm, first responders were called to a motor vehicle collision involving a sport utility vehicle and a farm tractor on Wellington Road 29 between Wellington Road 22 and Sideroad 30.
Wellington County OPP officials say both vehicles were southbound when the collision occurred.
Two male drivers were taken to a local hospital and one was later transported to a Hamilton hospital by air ambulance with non-life-threatening injuries.
The driver of a Kubota tractor was a 57-year-old Centre Wellington resident and the driver of a 2003 Chevrolet was a 26-year-old Melancthon Township resident.
Wellington County OPP officials are asking any possible witnesses to call 1-888-310-1122.