PT J Resources Bolaang Mongondow is a gold mining company that is active in blasting activities. During September 2022, the Powder Factor value for ore blasting increased from 0.37 to 0.48 and the Powder Factor value for waste blasting decreased from 0.26 to 0.21. The fragmentation size to fit into the heap leach pad without crushing is P80 ≤ 10 cm. This study uses a quantitative method with …