PT Golden Great Borneo is a company that has a concession in coal mining located in Lahat Regency, South Sumatra Province. In 2021, the coal production target at PT Golden Great Borneo is 2,170,000 tons with a stripping ratio limit of 2.5 and plans to increase the production target by 2,500,000 tons of coal with a stripping ratio limit of 3. it is necessary to plan a new mining sequence design …