The first workers of metal in the Bible are associated with the ruling line of Kain. One of his descendants, Tubal-Cain, "forged all kinds of tools out of bronze and iron. Tubal-Cain's sister was Naamah." (Gen. 4:22) Naamah married her patrilineal cousin Methusaleh and named their first born son Lamech after her father.
Watch this fascinating video that shows the smelting of iron from ore by a West African smith family. Watch as the elders make charcoal, dig ore and flux, build the kiln, fire the kiln, offer sacrifice, smelt the iron, and finally forge the iron into tools. The women play an important role also.