1. BHP Minerals Technology, P.O. Box 188, Wallsend, NSW, Australia, 2287 Phone: Facsimile:
2. BHP Minerals Technology, P.O. Box 188, Wallsend, NSW, Australia, 2287
3. 11 Wildflower Street, Capalaba, Qld., Australia, 4157
4. CSIRO Division of Telecommunications and Industrial Physics P.O. Box 218, Lindfield, NSW, Australia, 2070 Phone: Facsimile:
5. CSIRO Division of Telecommunications and Industrial Physics P.O. Box 218, Lindfield, NSW, Australia, 2070
6. P.O. Box 4087, Mulgrave, Vic. 3170, Australia
7. Earth Sciences, Monash University, Clayton, Vic., Australia, 3168