TY - CPAPER AU - Jiří Machač AU - Milan Maje TI - DISINTEGRATION OF COAL AND MINERAL MATERIALS T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 20th International Multidisciplinary Scientific GeoConference Proceedings SGEM 2020, Science and Technologies in Geology, Exploration And Mining PY - 2020 SP - 71 EP - 80 DO - 10.5593/sgem2020/1.2/s03.010 PB - STEF92 Technology ER -