TY - CPAPER AU - Cristina, Assist.Dr.Eng. Dura AU - Ciprian, Assist.Dr.Eng. DANCIU TI - STUDYING THE BEHAVIOR OF UNDERGROUND CONSTRUCTIONS STEEL TIMBERING IN ORDER TO INCREASE THEIR PERFORMANCE T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 13th SGEM GeoConference on SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING PY - 2013 SP - 451 EP - 458 pp DO - 10.5593/sgem2013/ba1.v2/s02.059 PB - Stef92 Technology ER -