1. Monsanto Co 721 Highway 6, Grinnell, IA 50112 Coordinate: 41.7492,-92.64455 Phone: (641) 236-6179
2. Monsanto Company 700 Blakely Cir, Grinnell, IA 50112 Coordinate: 41.708565,-92.72407 Phone: (641) 236-4060