DINH VC, NGUYEN AT, TRAN VT, NGUYEN THN, DUONG DH. Applying Artificial Pillar to Replace the Coal Pillar Protecting Roadway to Increase Production Efficiency and Sustainable Development in the Vietnamese Coal Industry. IM [Internet]. 20 grudzień 2021 [cytowane 23 listopad 2024];1(2). Dostępne na: https://inzynieriamineralna.com.pl/index.php/testowe/article/view/277