Antofagasta Regulatory News (ANTO)

2 May 2007 11:30

Antofagasta PLC02 May 2007 Antofagasta plc ANNUAL INFORMATION UPDATE London, 2 May 2007 This annual information update is made by Antofagasta plc (the "Company") inaccordance with Prospectus Rule 5.2. The information detailed below has beenpublished or made available to the public over the previous 12 months. The information referred to below was correct at the time it was published butmay now be out of date. A. Announcements made via a Regulatory Information Service The following announcements were made via a Regulatory Information Service: Date Description of Announcement 20 April Annual Report and Financial Statements and Notice of Annual2007 General Meeting 22 March Notification of major interests in shares2007 13 March Preliminary Results Announcement2007 31 January Quarterly Production Report Q4 20062007 24 January Notification of major interests in shares2007 19 December Director shareholding2006 15 December Voting rights and capital2006 12 December Update regarding Minera Los Pelambres: El Mauro Tailings Dam2006 29 November Quarterly Financial Report Q3 20062006 14 November Agreement with Ascendant Copper Corporation2006 07 November Minera Los Pelambres: El Mauro Tailings Dam project2006 31 October Quarterly Production Report Q3 20062006 29 September Change of Directors2006 26 September Interim dividend declaration2006 8 September Interim Report and Financial Statements2006 29 August Interim Results Announcement2006 24 August Update regarding cash offer for Equatorial Mining Ltd2006 16 August Update regarding takeover offer for Equatorial Mining Ltd2006 15 August AMP announce intention to accept Antofagasta's offer for2006 Equatorial Mining Ltd 15 August Cash offer for Equatorial Mining Ltd2006 15 August Sierra Gorda Copper Pty Ltd: Bidder's statement in relation to the2006 cash offer to acquire all the ordinary shares in Equatorial Mining Ltd 01 August Quarterly Production Report Q2 20062006 14 July Antofagasta to form joint venture with Anglogold2006 20 June Luksic family interest2006 19 June Admission to the Official List2006 19 June 4 for 1 bonus issue of ordinary shares2006 14 June Annual General Meeting statement2006 14 June Resolutions passed at Annual General Meeting2006 06 June Annual Information Update2006 25 May Quarterly Financial Report Q1-20062006 22 May Correction of Explanation of Special Business at AGM2006 16 May Dividends - amount payable in sterling2006 9 May Annual Report and Financial Statements and Notices of Meetings2006 3 May Quarterly Production Report Q1 20062006 Copies of these announcements can be obtained from the London Stock Exchangewebsite, www.londonstockexchange.com/marketnews, and from the investor relationspages of the Company's website, www.antofagasta.co.uk. B. Documents filed at Companies House The following documents were filed with the Registrar of Companies in Englandand Wales on or around the dates indicated: Date Document Filed 01 March Articles of association dated 14 June 20062007 17 October Form 288a, appointment of director2006 11 October Form 288b, resignation of director2006 17 August Form 363a, return made up to 19 June 20062006 11 July Form 88(3), particulars of a contract relating to shares allotted as2006 fully or partly paid up otherwise than in cash dated 21 June 2006 11 July Form 88(2), return of allotment of shares dated 19 June 20062006 03 July Form 123, notice of increase in nominal capital dated 14 June 20062006 03 July Resolution disapplying pre-emption rights, adopting new articles and2006 approving authority of the allotment of security dated 14 June 2006 and articles of association dated 14 June 2006 27 June Resolution varying shareholders rights dated 14 June 20062006 23 June Group accounts made up to 31 December 20052006 Copies of these documents are available to download from the Companies Housewebsite, www.companieshouse.gov.uk, or can be obtained from Companies House,Crown Way, Maindy, Cardiff CF14 3UZ. C. Documents submitted to the Financial Services Authority The following documents were filed with the Financial Services Authority on oraround the dates indicated: Date Document 20 April Annual Report and Financial Statements and Notice of Annual2007 General Meeting 8 September Interim Report and Financial Statements2006 22 May Letter Correcting Explanation of Special Business2006 9 May 2006 Proposed Articles of Association 9 May 2006 Annual Report and Accounts 2005 including Notice of Annual General Meeting and Notices of Class Meetings All of these documents were sent to shareholders on or around the same date. These documents can be viewed at the Document Viewing Facility situated at TheFinancial Services Authority, 25 North Colonnade, Canary Wharf, London E14 5HS.Copies of these documents can also be obtained from the financial informationand investor relations pages of the Company's website, www.antofagasta.co.uk. D. Documents lodged with the Australian Securities Exchange in Australia The following documents were submitted to the Australian Securities Exchange bythe Company or its wholly-owned subsidiaries Atacama Copper Pty Limited orSierra Gorda Copper Pty Limited on or around the dates indicated: Date Document 15 September Change in substantial holding in Equatorial Mining2006 Limited 8 September Section 603(3) notice to Equatorial Mining Limited2006 8 September Change in substantial holding in Equatorial Mining2006 Limited 6 September Compulsory acquisition notice to Equatorial Mining2006 Limited 25 August 2006 Change in substantial holding in Equatorial Mining Limited 24 August 2006 Minimum acceptance condition fulfilled 17 August 2006 Notice of dispatch of bidder's statement for Equatorial Mining Limited 16 August 2006 FIRB condition fulfilled by Antofagasta plc for Equatorial Mining Limited 16 August 2006 Becoming a substantial shareholder in Equatorial Mining Limited 15 August 2006 Intention to accept Antofagasta plc's offer 15 August 2006 Notice of record date to Equatorial Mining Limited 15 August 2006 Bidder's statement for Equatorial Mining Limited 15 August 2006 Takeover offer by Antofagasta plc for Equatorial Mining Limited 9 May 2006 Letter to Shareholders in Tethyan Copper Company Limited 1 May 2006 Change in substantial holding in Tethyan Copper Company Limited Copies of these documents can be obtained from the Australian SecuritiesExchange website www.asx.com.au/asx/statistics/announcementSearch.do (enteringthe ASX codes TYC and EQM). Enquiries Issued by Antofagasta plc Bankside ConsultantsTel: +44 20 7808 0988 Tel: +44 20 7367 8873www.antofagasta.co.uk Desmond O'Conor Keith IronsEmail: doconor@antofagasta.co.uk Email: keith@bankside.com Hussein Barma Oliver WintersEmail: hbarma@antofagasta.co.uk Email: oliver.winters@bankside.com This information is provided by RNS The company news service from the London Stock Exchange