1. Recycling and Stabilization Unit, CANMET, Natural Resources Canada, 3484 Limebank Road, Ottawa, ON K1A 0E4, Canada.
2. INSPEC SOL, Montréal, QC H4S 1C7, Canada.
3. Engineering and Technical Services, Public Works and Government Services Canada, 11 Laurier Street, Gatineau, QC K1A 0S5, Canada.