1. Technology Delivery Group, Alcoa World Alumina, P.O. Box 161 Kwinana, Western Australia 6167. Phone: +61 8 9410 3804; Fax: +61 8 9410 3197; E-mail: chanelle.carter@alcoa.com.au
2. ECN, Environmental Risk Assessment, Department Clean Fossil Fuels, 1755 ZG Petten, The Netherlands
3. Technology Delivery Group, Alcoa World Alumina, Kwinana, Western Australia 6167