en_tn/job/28/02.md

Iron is taken out of the earth

This can be stated in active form. Alternate translation: "People take iron out of the earth" (See: rc://en/ta/man/translate/figs-activepassive)

copper is smelted out of the stone

This can be stated in active form. Alternate translation: "people smelt copper out of the stone" or "people heat stone to melt copper out of it" (See: rc://en/ta/man/translate/figs-activepassive)

copper

an important red-brown colored metal

smelted

This is a process of heating rocks to melt the metal in them in order to get the metal out of the rocks.