TY - CPAPER AU - CSc. TI - DEGRADATION OF THE STATE OF A BALL TRACK AT THE ZP 6600 T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 16th International Multidisciplinary Scientific GeoConference SGEM2016, Science and Technologies in Geology, Exploration and Mining PY - 2016 SP - 243 EP - 254 DO - 10.5593/sgem2016/b12/s03.032 PB - Stef92 Technology ER -