The Important Factors to Consider When Investing in Iron Ore .
Apr 10, 2011 . Generally, iron ore falls into two categories, hematite and magnetite. . major iron ore producers: BHP Billiton (NYSE:BHP), Rio Tinto (NYSE:RIO), and . The beneficiation process for taconite requires crushing, screening, . be fed into a Direct Reduced Iron "DRI" plant, and then later used for steel making.Get Price