Iowa State Of--department Of Natural Resources, Research Lab Red Haw State Park Chariton, IA 50049 Phone : (641) 774-2958 Business Category Government Offices-State Business Services Government Offices State & Local Government Offices & Public Schools Research Laboratory 24570 Us Highway 34 Chariton, IA 50049 Phone : (641) 774-2958 Business Category Government Offices-State Legislative Bodies