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Infact Nucor the largest steel producer in the US, uses arc furnaces to produce most of the steel.

The question is: what are Nucor's inputs. As I understand it, their input is scrap metal, not ore. (I lived down the road from one of their plants, and work with someone who used to work there, but I don't have extensive first hand knowledge)

Nucor steel mills in the US are set up to melt scrap with electric arc furnaces. A varying amount of semi-processed iron (pig iron or direct reduced iron) is added to a batch; they get this iron by shipment instead of producing it on site.

As of time of writing they have one facility in the US that makes direct reduced iron from iron ore and natgas; this plant is in Louisiana at (30.08, -90.86).

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