Increase in US Reserves

Aminex PLC
28 March 2008

                                   AMINEX PLC



                                 28 March 2008



                           INCREASE IN U.S. RESERVES





Aminex PLC, the oil and gas company listed in London and Dublin, today publishes
the results of an updated independent appraisal of its reserves of oil and gas
in the USA prepared by OPC of Houston, Texas.



The total value of the appraised reserves at 31 December 2007, calculated on a
P50 basis, is reported to be $143,074,800, an increase of approximately 66% over
the value reported by OPC in respect of 31 December 2006.



The increase is due to higher oil prices, successful drilling efforts and
continuing production at Shoats Creek and Alta Loma, both of which had been
subject to interruption in previous years.



A summary of the OPC report for each of Aminex's four main producing areas has
been posted to the Aminex website (www.aminex-plc.com) and appears under the
Investors section.



For further information:

Brian Hall                  Aminex                      [phone]

Archie Berens               Pelham PR                   [phone]

Website                     www.aminex-plc.com


ENDS


                      This information is provided by RNS
            The company news service from the London Stock Exchange