TY - CPAPER AU - Przemysław Bukowski TI - HYDROGEOLOGICAL RESEARCH METHODS AS A TOOL FOR ASSESSMENT OF THE FREE SPACE CAPACITY IN ROCK MASS, GOAFS AND MINING EXCAVATIONS IN COAL MINES IN UPPER SILESIAN COAL BASIN T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Science and Technologies in Geology, Exploration and Minining PY - 2018 SP - 357 EP - 364 DO - 10.5593/sgem2018/1.2/s02.045 PB - STEF92 Technology ER -