Teodora Yankova (2020). MINERAL PROCESSING WASTE UTILIZATION. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 20th SGEM International Multidisciplinary Scientific GeoConference Proceedings 2020, Science and Technologies in Geology, Exploration And Mining, 821-828. https://doi.org/10.5593/sgem2020/1.1/s04.100