TY - CPAPER AU - Lazar, Maria AU - Faur, Assist.Dr.Eng. Florin TI - CONSIDERATIONS ON THE INFLUENCE OF EXTRACTION TECHNOLOGY OF LIGNITE IN OPEN PITS OVER THE PRODUCTION QUALITY T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; SGEM2012 12th International Multidisciplinary Scientific GeoConference PY - 2012 SP - 503 EP - 510 pp DO - 10.5593/sgem2012/s03.v1013 PB - Stef92 Technology ER -