TY - CPAPER AU - Ɓukasz Bednarek TI - MAINTAINING EXCAVATIONS FOR HIGH DEPTH IN THE LIGHT OF EXPERIENCE T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Science and Technologies in Geology, Exploration and Mining PY - 2018 SP - 545 EP - 552 DO - 10.5593/sgem2018/1.3/s03.070 PB - STEF92 Technology ER -