摘要
The Second World Congress on Non-minerals was held in Beijing, People’s Republic of China, from 17 to 21 of October, 1989. The central theme of the Congress was "Effective Development and Utilization of Non-metallic Minerals". Specific technical programs are 1). The development of industrial Mineral based industrits (including the production of building materials in the developing countries); 2). The economic and technical evaluation of industrial mineral raw material and deposits; 3). Mining, processing and comprehensive
