Oktavia, Priscilla. “Stability Analysis of Pit B Slope Using RMR (Rock Mass Rating) And GSI (Geological Strength Index) Methods At PT. Halo Tambang Berjaya, Kalianda District, South Lampung Regency”. ICSIGER- International Conference on Science and Emerging Technology , vol. 1, no. 1, Dec. 2025, https://conference.lppm.unila.ac.id/index.php/icsiger/article/view/36.