Chemco Pty Ltd & WG & BM Martin (Chemco Super Fund a/c) increased its relevant interest in PCH Group Limited on 26 June 2002, from 11,979,610 ordinary shares (9.02%) to 16,979,382 ordinary shares (12.79%).

Schroder Investment Management Australia Limited increased its relevant interest in Energy Developments Limited on 28 June 2002, from 5,680,376 ordinary shares (5.32%) to 6,861,795 ordinary shares (6.43%).

Commonwealth Bank of Australia decreased its relevant interest in Roc Oil Company Limited on 27 June 2002, from 18,638,488 ordinary shares (17.58%) to 17,944,662 ordinary shares (16.53%).

Commonwealth Mining NL increased its relevant interest in Roma Petroleum NL on 27 June 2002, from 4,131,520 ordinary shares (5.9%) to 4,834,520 ordinary shares (6.91%); and from 1,000,000 ordinary shares (1.43%) to 1,200,000 ordinary shares (1.71%).

Packer & Co became a substantial shareholder in Arc Energy NL on 28 June 2002 with a relevant interest in the issued share capital of 7,638,850 ordinary shares (5.00%).

Deutsche Bank AG & its related bodies corporate decreased its relevant interest in Energy Developments Limited on 27 June 2002, from 11,921,592 ordinary shares (11.18%) to 8,761,806 ordinary shares (8.22%).

Schroder Investment Management Australia Limited increased its relevant interest in Energy Developments Limited on 28 June 2002, from 5,680,376 ordinary shares (5.32%) to 6,861,795 ordinary shares (6.43%).

Credit Suisse First Boston Australia (Holdings) Limited (on behalf of the Credit Suisse First Boston group and its affiliates) increased its relevant interest in Nautronix Limited on 28 June 2002, from 4,904,210 ordinary shares (7.22%) to 5,836,477 ordinary shares (8.60%).

Perpetual Trustees Australia Limited became a substantial shareholder in Origin Energy Limited on 2 July 2002 with a relevant interest in the issued share capital of 33,411,969 ordinary shares (5.16%).