1. Red Cap ConsultingLake PointUtahUSA
2. Oregon State UniversityCorvallisOregonUSA
3. Windward EnvironmentalSyracuseNew YorkUSA
4. GEI ConsultantsFort CollinsColoradoUSA
5. US Geological Survey, Columbia Environmental Research CenterColumbiaMissouriUSA
6. European Aluminium AssociationBrusselsBelgium