BROADENING OUR HORIZONS - Arrium

Corporate DirectoryACN 004 410 833ABN 63 004 410 833DirectorsMr Peter J Smedley (Chairman)Mr R Bryan DavisMr Colin R Galbraith, AMMr Peter G NankervisMr Geoffrey J PlummerMr Dean A PritchardMr Graham J SmorgonMs Rosemary WarnockCompany SecretaryMs Kara L NichollsRegistered office and principal place of businessc/- Company Secretary, OneSteel LimitedLevel 40, 259 George StreetSydney NSW 2000 AustraliaTelephone: +61 2 9239 6666Facsimile: +61 2 9251 3042Internet: www.onesteel.comRegistryComputershare Investor Services Pty LimitedGPO Box 2975Melbourne VIC 3001 AustraliaTelephone: 1300 364 787 or +61 3 9415 4026Facsimile: +61 3 9473 2500Email: onesteelshareregistry@computershare.com.auInternet: www.computershare.comExternal auditorKPMGAustralian Securities Exchange listingOneSteel Limited listed on the Australian Securities Exchange on23 October 2000 under Issuer Code OST.Annual ReportThe 2011 Annual Report is available on our websitewww.onesteel.com. You can request a copy, by calling+61 2 9239 6666 or email investorenquiries@onesteel.comAnnual General MeetingThe 11th Annual General Meeting of OneSteel Limited will beheld at the City Recital Hall, 2 Angel Place, Sydney on Monday,21 November 2011 commencing at 2.30 pm AEDT. Registration willcommence at 1.30 pm AEDT. For a copy of the Notice of Meetingand associated documents, visit our website www.onesteel.comFinancial calendar (subject to change)21 November 2011Annual General Meeting31 December 2011End of first half of financial year21 February 2012Half year results and interim dividend announcedOST securities quoted on a cum basis for interim dividend5 March 2012OST securities quoted on an ex basis for interim dividend9 March 2012Interim dividend — Record dateLast day for securityholders to elect to participate in the DividendReinvestment Plan for interim dividendLast day for securityholders to advise Computershare of their TFNfor interim dividend19 April 2012Interim dividend — Payment date30 June 2012End of financial year21 August 2012Full year results and final dividend announcedOST securities quoted on a cum basis for final dividend10 September 2012OST securities quoted on an ex basis for final dividendLast day for securityholders to elect to participate in the DividendReinvestment Plan for final dividendLast day for securityholders to advise Computershare of their TFNfor final dividend14 September 2012Final dividend — Record date18 October 2012Final dividend — Payment date18 October 2012Annual Report and Notice of Meeting dispatched19 November 2012Annual General Meetingcreated by designate