side note on smelter question:
There are several still operating in Australia.
Kalgoorlie Nickel Smelter
Port Pirie Smelter in South Australia
There are six primary aluminium smelters in Australia, namely Bell Bay (Tasmania), Boyne Island (QLD), Hydro Kurri Kurri (NSW), Point Henry (VIC), Portland.
There are some others I have not listed.
Bluescope and One Steel are still currently manufacturing steel in Australia.
Smorgans Steel recycle steel here still.

All of these operations are struggling due to high labour and input costs, and cheaper imports from China or even Korea.

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