COMMISSION OF THE EUROPEAN COMMUNITIES DIRECTORATE-GENERAL XIII SIGNAUX ACOUSTIQUES AUDITORY WARNINGS MANUTENTION MANUELLE DANS L'ENTREPRISE POLLUTION EN SIDÉRURGIE COAL POLICY AND THE INTERNAL MARKET ■ SUPPLEMENT TO PROGRESS IN COAL, STEELAND RELATED SOCIAL RESEARCH A European Journal Edited by the Commission of the European Communities DirectorateGeneral XIII Information Technologies and Industries, and Telecommunications ECSC ERGONOMICS PROGRAMME Editorial Board A. FOUARGE Secrétaire Comité consultatif CECA P. F. SENS Technical steel research DGXII Science, Research and Development FORSCHUNGSV ERTRAGE RESEARCH AGREEMENTS F. KINDERMANN CONVENTIONS DE RECHERCHE Coal technologies DG XVII Energy TECHNICAL CONTROL OF NUISANCES W.OBST AND POLLUTION Mines and other extractive industries and R. HAIGH INDUSTRIAL HYGIENE IN MINES Industrial medicine and hygiene DGV Employment, Industrial Relations and Social Affairs T. CARR Visiting Professor Royal School of Mines, London Editors R. RAPPARINI and P. PROMETTI COMMUNITY NEWS Dissemination of Scientific and NOUVELLES DL· LA COMMI NAU Technical Knowledge Unit DG XIII Information Technologies and COAL POLICY AND INTERNAL MARKET Industries, and Telecommunications Official Journal of the European Communities C 14 of .20.