Diane Rosenberg heads up the Iowa organization called Jefferson County Farmers and Neighbors or JFAN. While the rest of Iowa is drowning in hog manure from Concentrated Animal Feeding Operations, Jefferson County has managed to keep the onslaught at a minimum. Outside the county, JFAN is known for its publications on several CAFO-related topics such as liability for farmers accepting CAFO manure as fertilizer on their properties.