What is Oregrounds iron?
{{notability|date=September 2019}} '''Oregrounds iron''' was the best [[iron]] made in the 18th century. It was made in the [[Sweden|Swedish]] city of [[Öregrund]]. Oregrounds iron is made by making [[pig iron]] in a [[blast furnace]], then refining the pig iron in a [[finery forge]]. [[Category:Iron]]