Bible Verses About Metals: Freed from dross by fire

Sonne of man, the house of Israel is vnto me as drosse: all they are brasse, and tinne, and yron, and leade in the mids of the fornace: they are euen the drosse of siluer.

As they gather siluer and brasse, and yron, and leade, and tinne into the middes of the fornace, to blowe the fire vpon it to melt it, so wil I gather you in mine anger and in my wrath, and wil put you there and melt you.