Commonwealth Bank of Australia increased its relevant interest in Novus Petroleum Limited on 10 April 2002, from 19,560,188 ordinary shares (10.67%) to 21,403,817 ordinary shares (11.67%).

Commonwealth Bank of Australia changed its relevant interest in Australian Worldwide Exploration Limited on 11 April 2002, from 36,829,199 ordinary shares (19.13%) to 38,984,416 ordinary shares (17.81%).

FMR Corp changed its relevant interest in Australian Oil & Gas Corporation Limited on 08/04/2002, from 4,629,025 ordinary shares (9.56%) to 4,629,025 ordinary shares (7.97%) while at the same time it ceased to be a substantial shareholder in Orogen Minerals Limited

Hardman Resources Ltd became a substantial shareholder in Arc Energy NL on 04 April 2002 with a relevant interest in the issued share capital of 15,825,000 ordinary shares (10.37%).

ARK Securities & Investments Pty Ltd became a substantial shareholder in Cooper Energy NL on 02 April 2002 with a relevant interest in the issued share capital of 3,615,000 ordinary shares (5.09%).

Ensign Resource Service Group Inc changed its relevant interest in Australian Oil & Gas Corporation Limited on 03 April 2002, from 7,588,812 ordinary shares (16.19%) to 9,107,776 ordinary shares (15.69%).