Abstract
Following the recent Basel Convention, increasing emphasis has been placed on technical co-operation to assist developing countries to put in place effective hazardous waste control measures. ISWA, together with other contributing organizations, held in September 1989 a workshop at which case studies of successful hazardous waste management initiatives were analysed. The workshop indicated that a large number of interrelated measures are needed for effective control of hazardous wastes, and that these are best developed gradually in an evolutionary fashion. Measures used by industrialized countries often need to be further adapted for use in other regions. A number of practical first steps were identified that can be used in all countries to initiate effective control. Some general principles to guide the process of adaptation were also formulated.