Carbon And Alloy Steel Bars And Rods
2013-9-19ensp0183enspiron and steel scrap, coal, and limestone. Iron ore is a natural com bination of iron oxides and other materials, such as silicon and phos phorus. Until recently, the industrys main sources of iron were the high-grade ores, containing from 55 to 65 per cent iron, which were mined and sent directly to the steel plants. Today, the most available.