The Dwarves were one of the Free Peoples of Middle Earth. They called themselves Khazad, which was the name given to them by Aule, their creator. After the awakening of the Elves, the Dwarves were divided into Seven Folk, each with their own king and ancestral hall. They were master craftsmen and miners, working with stone and metal. In the mines of Moria they discovered mithril, silver metal which was very hard yet lightweight. In battle they favored long handled single and double-bladed axes. They stood 4.5 to 5 feet tall, and lived to about the age of 250. Their population dwindled due to losses in battle and the few numbers of women.