I can't remember where I read this (busy at work so, sorry, no source), but: There's a production/re-use cycle in Europe wherein Aluminium is processed and sme

I can't remember where I read this (busy at work so, sorry, no source), but: There's a production/re-use cycle in Europe wherein Aluminium is processed and smelted in Iceland, turned into ingots which are sent to mainland Europe to be manufactured-with, and then resultant used product sent back to Iceland for melting down and processing back into ingots. The point being: Iceland uses geothermal energy to work Aluminium, so the entire process is one grand re/charge cycle of a significantly-used and energy-dense process. Next step - small, modular fission power sources for the likely-hydrocarbon based and heavily-polluting ships transporting it all back and forth.