1. National Centre for Groundwater Research and Training (NCGRT) College of Science and Engineering, Flinders University P.O. Box 2100, Adelaide South Australia 5001 Australia.
2. Discipline of Mathematics College of Science and Engineering, Flinders University P.O. Box 2100, Adelaide South Australia 5001 Australia.
3. Rio Tinto Iron Ore Wesley Quarter Level 1, 93 William St., Perth Western Australia 6000 Australia.