TY - CPAPER AU - Pavel Černota TI - CONNECTING AND ORIENTATION OF THE HORIZON OF MINING WORKINGS T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; SGEM2011 11th International Multidisciplinary Scientific GeoConference PY - 2011 DO - 10.5593/sgem2011/s03.111 PB - Stef92 Technology ER -