Terra owns and operates five nitrogen products manufacturing facilities in Courtright, Ontario; Sioux City, Iowa; Verdigris and Woodward, Oklahoma; and Yazoo City, Mississippi. It owns a 50% interest in Point Lisas Nitrogen Limited, an ammonia manufacturing facility in the Republic of Trinidad and Tobago. This world-scale facility is one of the lowest-cost manufacturers in the western hemisphere. Terra also holds a 50% interest in GrowHow UK Limited, a nitrogen and process chemicals business in the UK.