“While Big Steel fiddled, basic-oxygen furnaces burned ever brighter around the world. So, too, did yet another method of making steel that was even more revolutionary: the electric-arc method. This technique used electricity to recycle iron scrap, turning it into steel. Unlike conventional steel mills, electric arc mills are small-scale enterprises that are easy to establish and cheap to build, even if they can’t produce anywhere near the scale of a conventional integrated mill.”
Nenhum comentário:
Postar um comentário