TY - CPAPER AU - Przemyslaw Bukowski TI - THE ANALYSIS OF SELECTED PROPERTIES OF SOLID ROCK MATERIALS DESIGNED FOR SHAFTS LIQUIDATION T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 13th SGEM GeoConference on SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING PY - 2013 DO - 10.5593/sgem2013/ba1.v2/s02.061 PB - Stef92 Technology ER -