Board Thread:Suggestions Forum/@comment-24.229.47.101-20150131212241/@comment-26084998-20150216183646

The Eregion elven smiths had the knowledge to forge Rings of Power, taught to them by Sauron. But only Durin's Folk and the other Dwarven Kingdoms, as well as the Elves they chose to share that knowledge with knew how to make Mithril into a workable metal.