Cliffs Natural Resources Inc (NYSE:CLF) slid -3.23%, to close at $84.37 and its overall traded volume was 4.23M shares in the last trading session. CLF shares were trading within the range of $84.03-$87.96 while its opening price was $87.24. The 52-week range of the stock is $44.20 – $102.48. The market capitalization of the company stands at $11.44B and it has 135.65M outstanding shares.Cliffs Natural Resources Inc. is an international mining and natural resources company. The Company is a producer of iron ore pellets in North America and metallurgical coal, and a supplier of direct-shipping lump and fines iron ore out of Australia. Its operations are managed into groups: North American Iron Ore; North American Coal; Asia Pacific Iron Ore; Asia Pacific Coal; Latin American Iron Ore; Alternative Energies; Ferroalloys; and Global Exploration Group. In North America, it operates six iron ore mines in Michigan, Minnesota and Eastern Canada, five metallurgical coal mines located in West Virginia and Alabama and one thermal coal mine located in West Virginia. On January 27, 2010, it acquired Freewest. On February 1, 2010, it acquired interests in Wabush. October 6, 2010, it acquired Spider. On July 30, 2010, it acquired all of the coal operations of privately owned INR.