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by ummonk 1792 days ago
The earth is made out of iron. There is no point in mining it in space, and regardless anything mines in space would be far too expensive for a use like this, which is why the main prospects for asteroid mining are precious metals.
1 comments

Yes, iron ore is mined in massive quantities in Western Australia at a cost in the order of $100 per ton.
Yes, we're not gonna run out. WA ships nearly a billion tons/yr.