In the 17th century about 20 copper-mines were set up to the north and north-west of the church, with the smelting works by Flesvikelva. From 1806 to 1818 Carsten Anker ran the Feiring Iron Works by Skreikampen. Feiring Ironworks is one of the best preserved post-Industrial Revolution ironworks in Norway. The housing stands almost completely untouched to this day. The ironworks sites and the remains of the smelter have been restored and Eidsvoll Historical Society has erected information-posts around the work area. In recent years an annual historical play has been performed in the grounds of the ironworks. Ironworks Weekend (Jernverkshelga) is held in August.