Not the same. You don't use up the iron you mine in the mining process. That's what EROEI < 1 is, unless you get the energy input from some other source. And s

Not the same. You don't use up the iron you mine in the mining process. That's what EROEI < 1 is, unless you get the energy input from some other source. And since anything that's in petroleum can be synthesized from simple molecules like water and CO2, given enough energy...