Pertiwi, Yovanka Syulah, et al. “Optimization of Oxygen and Acetylene Gas Inventory Control Through Forecasting-Based ROP and ROQ Evaluation at PT Kaltim Prima Coal”. Journal of Industrial Innovation and Safety Engineering, vol. 3, no. `1, June 2026, pp. 48-54, doi:10.35718/jinseng.v3i`1.8481988.