Iowa Fertilizer Co., a subsidiary of OCI N.V. has started up its fertilizer plant in Wever, in southeast Iowa. Local and state government officials attended a ceremony marking one of the largest private construction projects in Iowa. The $3 billion plant will produce about 1.5 to 2 million metric tons of nitrogen fertilizer products annually. The project created 3,500 construction jobs at the peak, and has 200 full-time operations positions. Gov. Terry Branstad said in a statement the local unemployment rate fell from 8 percent to 5.3 percent during construction.