1. Mott MacDonald Singapore Pte Ltd., 1 Grange Road #07-01, Orchard Building, Singapore 239693.
2. Foundation Engineering, Soil and Rock Mechanics,
Ruhr-Universität Bochum, Bochum, Germany.
3. Golder Associates Ltd., 1721 8th Street East, Saskatoon, SK S7H 0T4, Canada.