The recent conservation literature has paid particular attention to the deterioration and conservation of archaeological iron, in particular from underwater sites. There is little published information available on the treatment of the metal and metal composite collections housed in ethnographic museums and in open air museums. Describes experience in conserving these materials. Commences with an overview of the general conservation treatments used, including examination, storage and exhibition, and report writing. Discusses in detail the conservation treatments used for treating iron, copper, silver, gold, lead, tin, and their alloys, also composite materials. The final section looks at outdoor sites.