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BROADENING OUR HORIZONS - Arrium

BROADENING OUR HORIZONS - Arrium

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Resources StatementResources StatementOre Reserves and Mineral ResourcesThe information in this report that relates to the mineral resources and ore reserves is based on information compiled by Paul Leevers,who is a member of the Australasian Institute on Mining and Metallurgy.Mr Leevers is a full time employee of the Company and has sufficient experience which is relevant to the style of mineralisation andtype of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined in the 2004Edition of the “Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves”. Mr Leevers consents to theinclusion in the report of the matters based on his information in the form and context in which it appears.Additional hematite reserves of 2.5Mt have been included after depletion of 5.1Mt due to mining based on exploration activities carriedout during the year ended 30 June 2011. Significant tonnages were identified at the Iron Baron Mining Area where exploration continues.7.4Mt of probable reserves are included from the Iron Princess area and is subject to Native Heritage Clearance. This matter is currentlyunder consideration by the relevant State Minister.OneSteel remains committed to active mineral exploration on its tenement holdings.All Resource and Reserve figures represent estimates as at 30 June 2011, unless otherwise stated. Rounding of tonnes and gradeinformation may result in small differences presented in the totals.Magnetite reserves are inclusive of magnetite stockpile, which will be depleted during life of mine.125WHYALLA (MIDDLEBACK RANGE) HEMATITE RESERVESAS AT30 JUNE 2011AS AT30 JUNE 2010OneSteelInterestCategory Proved Ore Reserve Probable Ore Reserve Total Ore Reserves Total Ore ReservesTotalQuantityOre typeHematite, Goethite,Limonite, MinormagnetiteTonnes(m)Fe Grade(%)P(%)Tonnes(m)Fe Grade(%)P(%)Tonnes(m)Fe Grade(%)P(%)Tonnes(m)Fe Grade(%)P(%) %CompetentPerson9.5 60.7 0.09 34.1 60.5 0.09 43.6 60.5 0.09 46.2 60.9 0.09 100 P. LeeversWHYALLA (MIDDLEBACK RANGE) MAGNETITE RESERVESAS AT30 JUNE 2011AS AT30 JUNE 2010Category Proved Ore Reserve Probable Ore Reserve Total Ore Reserves Total Ore ReservesOneSteelInterestDTR Grade(%) %CompetentPersonTonnes DTR Grade Tonnes DTR Grade Tonnes DTR Grade TonnesOre type(m)(%)(m)(%)(m)(%)(m)Total Quantity Magnetite 35.3 41.4 41.9 40.2 77.2 40.8 83.4 40.9 100 P. LeeversMineral ResourcesThe table below shows OneSteel’s in-situ resource base adjacent to existing operations at a cut-off grade of Fe >50% and SiO 2

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