Natural Resources Conservation 306 11th Street Sw Plz Spencer, IA 51301 Phone : (712) 262-3432 Business Category Land Mineral Wildlife & Forest Conservation United States Government--agriculture Department Of, Natural Resources Conservation Service 306 11th Street Sw Plz Spencer, IA 51301 Phone : (712) 262-3432 Business Category Builders & Contractors Government Offices-Federal Home Builders Business Services Land Mineral Wildlife & Forest Conservation General Contractors-Residential Buildings Government Offices & Public Schools