 In the tempering of steel alone of all crafts the Dwarves were never outmatched even by the Noldor, and in the making of mail of linked rings, which was first contrived by the smiths of Belegost, their work had no rival.During the third age of the captivity of Melkor, the Dwarves smithied for Thingol; for they were greatly skilled in such work, though none among them surpassed the craftsmen of Nogrod, of whom Telchar the smith was greatest in renown.They were also capable masons and smiths - Dwarven smithing skills were said to be unrivalled, and their masonry creations were bested by none.