Further re Recommended Offer

ALLIANCE RESOURCES PLC 11 August 1999 ALLIANCE RESOURCES PLC On 23 July 1999 American Rivers Oil Company ('AROC') and Alliance Resources PLC ('Alliance') announced that they had entered into a preliminary agreement under which, subject to the satisfaction of various pre-conditions, AROC would make a recommended share for share offer for Alliance. The announcement stated that if an offer for Alliance were made by AROC, it would comply with the City Code on Takeovers and Mergers. Over the past few years, as a consequence of the various transactions approved by shareholders, the central management of Alliance has moved from the United Kingdom to the USA. Following discussions with the Panel on Takeovers and Mergers, Alliance has established that, because of this move of central management, the City Code on Takeovers and Mergers no longer applies to it. If AROC makes an offer for Alliance, AROC will be filing, and circulating to shareholders of Alliance, a registration statement which complies with US securities legislation, in relation both to its offer for Alliance shares and the corresponding issue of shares in AROC in exchange for Alliance shares. In the circumstances, AROC has indicated that such an offer would not be subject to the requirements of the City Code on Takeovers and Mergers. For further details, contact: Alliance Resources PLC American Rivers Oil Company Jak Keenan, Chairman and Managing Karlton Terry, President Director 4200 E Skelly Drive, Suite 1000 700 East 9th Avenue Tulsa Denver Oklahoma 74135 Colorado 80203 USA USA Tel: 001 918 491 1100 Tel: 001 303 832 1117