This is a summary of the proceedings of sessions on Volcanic Hazards at the First International Symposium on Public Health in Asia and the Pacific Basin, held 3–11th March 1983, in Honolulu, Hawaii. The Symposium was sponsored by the Association of Schools of Public Health, the U.S. Public Health Service and the Centers for Disease Control (CDC), the World Health Organization (WHO), the South Pacific Commission, and the East–West Center of the University of Hawaii. The full proceedings are being prepared for publication. The Symposium was supported in part by: The Pan American Health Organization and The Amoco Foundat