iron ore 2000 42 1 by william s kirk domestic survey data and tables were prepared heather a geissler statistical assistant the world production table was linder roberts international coordinator of in increased 9 reflecting an increase steel with attendant pig similarly output rose higher levels there major acquisitions industry prices is essential to economy national security united states as basic raw material from which are made its supply critical any industrial country scrap used supplement steelmaking but limited feed because high quality however alternatives such direct reduced dri available their use growing accounted for more than 98 5 consumption mineral substance when heated presence reductant will yield metallic it almost always consists