Analysis of Reinforcement System (Rock Bolt and Shotcrete) Effect on The Pillars Strength in Underground Mining Using Physical Models Testing in Laboratory. Geomine [Internet]. 2021 Apr. 30 [cited 2025 Jun. 28];9(01):73-87. Available from: https://jurnal.fti.umi.ac.id/index.php/JG/article/view/1472