PT Triaryani is located in North Musi Rawas Regency, South Sumatera Province. PT Triaryani has a mining business permit area of 2143 hectares. Coal production at PT Triaryani as of October 2021 is 1.142.859 tons. PT Triaryani plans to increase the production target in 2022 and beyond. So it is necessary to plan for the design and scheduling of new mining to achieve production targets. This rese…