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According to TheBottleGuide.com

How is steel made?

There are two steel production processes that have been well established throughout the world and both require the use of scrap metal.

Integrated steel-making - BOS - Blast furnace and basic oxygen furnace using iron ore, coking coal and scrap. – process used for steel for packaging.

Electric steel-making - EAF - Electric arc furnace, from 100% scrap

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