TY - CPAPER AU - Tudor Goldan TI - UP-TO-DATE METHODS AIMED AT OPTIMUM MINING TECHNOLOGY SELECTION IN LIGNITE OPEN-PITS FROM THE ROMANIAN OLTENIA BASIN T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; SGEM2011 11th International Multidisciplinary Scientific GeoConference PY - 2011 DO - 10.5593/sgem2011/s03.153 PB - Stef92 Technology ER -