Firmansyah, Ilham, Barlian Dwinagara, Untung Sukamto, Bagus Wiyono, and Tedi Agung Cahyadi. “Slope Stability Analysis With Probability Failure Approach on Coal Mining Pit 8AN East Block of PT Indominco Mandiri”. ReTII (October 27, 2020): 227-234. Accessed July 22, 2024. //journal.itny.ac.id/index.php/ReTII/article/view/2062.