TY - CPAPER AU - Irena Grigorova TI - MINERAL COMPOSITION, LEAD-ZINC ORES GRINDABILITY AND BOND WORK INDEX CORRELATION T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 19th SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings19th, Science and Technologies in Geology, Exploration And Mining PY - 2019 SP - 869 EP - 876 DO - 10.5593/sgem2019/1.3/s04.112 PB - STEF92 Technology ER -