|fc European Commission Community Research Project report Nuclear Science and Technology Microstructural and chemical parameters of bentonite as determinants of waste isolation efficiency W7 EURATOM EUR 18950 EN EUROPEAN COMMISSION Edith CRESSON, Member of the Commission responsible for research, innovation, education, training and youth DG XII/D.II.3 — R & T programme 'Nuclear fission safety 1994-98' Contact: Mr G. A. Cottone Address: European Commission, rue de la Loi/Wetstraat 200 (MO 75 5/43), B-1049 Brussels — Tel. (32-2) 29-51589; fax (32-2) 29-54991 European Commission nuclear science Microstructural and chemical parameters of bentonite as determinants of waste isolation efficiency R. Pusch (1), A. Muurinen (2), J. Lehikoinen (3), J. Bors (3), T.