Result of Placing

Aminex PLC 03 June 2005 NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION IN PART OR IN WHOLE IN OR INTO THE UNITED STATES, AUSTRALIA, CANADA, JAPAN OR SOUTH AFRICA. For immediate release 3rd June 2005 Aminex PLC ("Aminex" or the "Company") Placing and Open Offer to raise up to Stg£6.6 million (€9.7 million) Highlights • Placing of 50,800,000 Ordinary Shares at Stg 8.7p per share to raise approximately Stg£4.4 million (€6.5 million) (the "Placing"); • Open Offer to Qualifying Shareholders of 24,973,433 Ordinary Shares on the basis of 1 Ordinary Share for every 4 existing Ordinary Shares at Stg 8.7p (€12.9c) per share to raise up to Stg£2.2 million (€3.2m) (the "Open Offer"); and • Proceeds of the Placing and Open Offer to fund capital expenditure on the Group's Tanzanian and North Korean acreage and other opportunities The Board of Aminex is pleased to announce that Aminex has conditionally placed firm 50,800,000 Ordinary Shares with institutional investors, representing approximately 51% of the Existing Issued Share Capital on 3 June 2005 (the "Placing"). The gross proceeds of the Placing will amount to approximately Stg£4.4 million (€6.5 million) and are intended to be used to fund capital expenditure for the Group's Tanzanian and North Korean acreage and in pursuing new acreage opportunities, development drilling in the USA and for general working capital purposes. The Placing has been arranged by Oriel and Davy. The Placing has not been underwritten and is conditional on shareholder approval, the Placing Agreement becoming unconditional in all respects and admission of the Placing Shares and the Open Offer Shares (together the "New Ordinary Shares") to the official lists of the Irish Stock Exchange and the UK Listing Authority and to trading on the main markets of the Irish Stock Exchange and the London Stock Exchange. In addition, the Company today announces the launch of an Open Offer to Qualifying Shareholders of 24,973,433 Ordinary Shares ("Open Offer Shares") on the basis of 1 new Ordinary Share for every 4 existing Ordinary Shares at Stg 8.7p (€12.9c) per share to raise up to Stg£2.2 million (€3.2m). The Open Offer has not been underwritten and Oriel and Davy have reserved the right to place any unsubscribed Open Offer Shares for the benefit of the Company at the Placing Price of Stg 8.7p, following the closing date of the Open Offer. Application has been made to the Irish Stock Exchange and to the UK Listing Authority for 75,773,433 New Ordinary Shares to be admitted to the Official List of the Irish Stock Exchange and the Official List of the UK Listing Authority and application has been made to the Irish Stock Exchange and the London Stock Exchange for admission of these New Ordinary Shares to trading on their respective main markets for listed securities. It is expected that admission of New Ordinary Shares to the Official Lists will become effective and that dealings will commence, in respect of the Placing Shares and the Open Offer Shares on or around 28 June 2005. A document comprising listing particulars and a prospectus (the "Listing Particulars") has been prepared to provide further information on Aminex and its operations, to advise Shareholders of the details of and procedure for application under the Open Offer and to facilitate admission of the New Ordinary Shares to listing on the Official Lists of the Irish Stock Exchange and of the UK Listing Authority, and to trading on the Irish Stock Exchange's and the London Stock Exchange's respective main markets for listed securities. For Further Information: Aminex PLC (+44 20 7240 1600) Brian Hall Oriel Securities Limited (+44 20 7710 7600) Simon Bragg/Scott Richardson Brown Davy Corporate Finance Limited (+353 1 679 6363) Hugh McCutcheon/Fergal Meegan Placing and Open Offer Timetable: Event Time and Date Record Date for the Open Offer the close of business on 2 June 2005 Date of despatch of Listing Particulars and the Application Forms 3 June 2005 Latest time and date for splitting Application Forms (to satisfy bona fide 3.00 p.m. on 22 June 2005 market claims only) Latest time and date for receipt of completed Application Forms and 3.00 p.m. on 25 June 2005 payment in full under the Open Offer Time and Date of Extraordinary General Meeting 11.00a.m. on 27 June 2005 Admission to listing of the New Ordinary Shares to the Official Lists 28 June 2005 and commencement of dealing therein on the Irish Stock Exchange and the London Stock Exchange* CREST accounts expected to be credited in respect of the New Ordinary 28 June 2005 Shares no later than* Definitive share certificates in respect of the New Ordinary Shares 1 July 2005 expected to be despatched no later than* *Assumes passing of the Resolution to be proposed and considered at the Extraordinary General Meeting. Each of the times and date in the above timetable is subject to change Document Availability A copy of the Listing Particulars dated 3 June 2005 will be submitted to the Irish Stock Exchange and the UK Listing Authority and will shortly be available for inspection at the following locations: Company Announcements Office, Financial Services Authority, The Irish Stock Exchange, 25 The North Colonnade, 28 Anglesea Street, Canary Wharf, Dublin 2, London E14 5HS, Ireland. United Kingdom. Tel: + 353 1 617 4200 Tel: + 44 207 066 1000 Terms defined in the Listing Particulars have the same meaning in this announcement. Any purchase of, or application for, Ordinary Shares in the Placing and Open Offer should only be made on the basis of the information contained in the Listing Particulars. Your attention is drawn in particular to the section entitled ''Risk Factors'' in Part III of the Listing Particulars. Oriel Securities Limited (''Oriel'') (which is regulated in the UK by the Financial Services Authority) and Davy Corporate Finance Limited and J & E Davy (collectively ''Davy'') (each of which are regulated in Ireland by the Irish Financial Services Regulatory Authority) are acting exclusively for Aminex in connection with the requirements of the Irish Stock Exchange and the UK Listing Authority and for no one else (including the recipient of the Listing Particulars) and will not be responsible to any other person for providing the protections afforded to customers of Oriel and Davy nor for providing advice in connection with any transaction or arrangements referred to in the Listing Particulars and this announcement. The information contained in the Listing Particulars and this announcement is not for publication or distribution in or into the United States of America. These materials are not an offer of securities for sale in the United States. The securities referred to therein have not been and will not be registered under the U.S. Securities Act of 1933, as amended, and may not be offered or sold in the United States absent registration under that Act or an available exemption from registration. No public offering of the securities referred to herein will be made in the United States. The information contained in the Listing Particulars and this announcement is not for publication or distribution to persons in Australia, Canada, Japan or South Africa. Subject to certain exceptions, the New Ordinary Shares may not, directly or indirectly, be offered, sold, taken up or delivered in, into or from Australia, Canada, Japan or South Africa. The Listing Particulars or this announcement does not constitute an offer to sell or the solicitation of an offer to buy New Ordinary Shares in any jurisdiction in which such offer or solicitation is unlawful. This information is provided by RNS The company news service from the London Stock Exchange

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