The Element Encyclopedia of Witchcraft: The Complete A-Z for the Entire Magical World - Judika Illes 2005
Dwarfs are the master smiths of Nordic mythology. They helped forge the World Mill from which Earth was created. (See page 639, Millers.) Dwarfs, also known as dark elves, are ultimately under the dominion of Freyr, the Elven King.
Like Snow White’s seven dwarfs, dwarfs are traditionally miners: they are involved in every aspect of metalworking, from extraction to the crafting of exquisite jewelry and weapons. Unlike Snow White’s dwarfs, however, sacred mythological dwarfs don’t live in little houses but deep within Earth, inside mountain caverns.