only the gold, the silver, the bronze, the iron, the tin, and the lead,

“Son of man, the house of Israel has become dross (metallic waste) to Me. All of them are (useless) bronze, tin, iron, and lead in the furnace; they are the dross of silver.

As they gather silver and bronze and iron and lead and tin into the furnace to blow fire on it in order to melt it, so I will gather you in My anger and in My wrath, and I will put you there and melt you.

“Tarshish [in Spain] was your customer and traded with you because of the abundance of your riches of all kinds; with silver, iron, tin, and lead they paid for your wares.

“And I will turn My hand against you,
And will [thoroughly] purge away your dross as with lye
And remove all your tin (impurity).