PROCEEDINGS OF THE INTERNATIONAL ON RESOURCE CONSERVATION AND ENVIRONMENTAL TECHNOLOGIES IN METALLURGICAL INDUSTRIES TORONTO, ONTARIO, AUGUST 20-25, 1994 Resource Conservation and Environmental Technologies in Metallurgical Industries Editors: P. Mahant Ontario Ministry of Environment and Energy Toronto, Ontario C. Pickles Queen's University Kingston, Ontario W-K. Lu McMaster University Hamilton, ontario Symposium organized by the Non-ferrous P;.TometalIurgy Section, the Iron and Steel Section and the Environmental Committee of The Metallurgical Society of CIM. 33rd M"1'.'UAL CONFERENCE OF METALLURGISTS OF CIM 33e CONrERENCE DES META.lLURGISTES DE L'ICM