2 Iron is taken from the earth, and copper is smelted from ore.
Job 28:2 Cross References - BSB
Genesis 4:22
22 And Zillah gave birth to Tubal-cain, a forger of every implement of bronze and iron. And the sister of Tubal-cain was Naamah.
Numbers 31:22
22 Only the gold, silver, bronze, iron, tin, and lead—
Deuteronomy 8:9
9 a land where you will eat food without scarcity, where you will lack nothing; a land whose rocks are iron and whose hills are ready to be mined for copper.
1 Chronicles 22:14
14 Now behold, I have taken great pains to provide for the house of the LORD—100,000 talents of gold, 1,000,000 talents of silver, and bronze and iron too great to be weighed. I have also provided timber and stone, and you may add to them.