PT Putra Muba Coal (PMC) is located in Sungai Lilin District, Musi Banyuasin Regency. PT PMC set a coal production target of 3 semesters of 1850,000 tons. To meet the production target, PT PMC plans to mine the Abimanyu pit, so a scheduled, safe, and economical pit design plan is needed and can support the achievement of the planned production target. The maximum value of the stripping ratio is…