---

R. BRYSON PTY LTD O'DEA SUPER PTY LTD IDS COMPUTER CONSULTANTS SUPER FUND PTY LTD VAMONA PTY. LIMITED ODENDALE PTY LTD JELVARA PTY. LIMITED HAMBERLING PTY LTD PERBRICK PTY LTD SMEC AUSTRALIA PTY. LIMITED V.G. & J. BUSACCA CO. PTY. LTD. STILLRAY PTY. LIMITED CHAMDON PTY LTD RAINMINT PTY. LIMITED RENTECH PTY. LTD. ARMSTRONG WHITE HOLDINGS PTY LTD J S S J NOMINEES PTY LTD DISME PTY. LTD. PLAN AND WIN PTY LTD ATV CONSTRUCTIONS PTY LTD INFRASTRUCTURE SERVICES AUSTRALIA PTY LTD