User blog comment:LOTRMod/On the Removal of Diamonds/@comment-25356210-20141231160047/@comment-25344655-20150117050432

Tolkien said in his books that "Of thew races, only the dwarves could make Mithril a metal" suggesting that the dwarves, and only the dwarves, could make Mithril a metal.

Plus, Olog-Hai, Angmar orcs that inflict wither, Morgul armor that inflicts wither, Mordor as a whole, Mumakil (Oliphaunts) a gigantic elephant, the evil side will get fell beasts as well in the far future I believe as well.