PT Muara Alam Sejahtera is a coal mining company located in Lahat Regency, South Sumatra, holding a Mining Business Permit (IUP) covering an area of 1,745 hectares. In conducting overburden dumping activities, one of the methods employed by PT Muara Alam Sejahtera is out-pit dumping. A key issue faced is ensuring that the design of the East OPD (Out-Pit Dump) disposal area remains safe, despite…