oa Archaeomagnetic prospecting and modelling of iron age slags in Denmark

The archaeological reconstruction of how iron was produced from Holocene bog-iron ore and charcoal in Denmark during the lron Age is described. The total number of kilns could to be of the order of 100 000. Search for slags during the last five years by magnetic surveying in general, as well as by magnetic mapping in detail, including simple interactive interpretation by inclined magnetic dipoles (spheres), are illustrated.