Carin, C., Sofjan, K.N., Alden, A., Gilbert, K., Phangestu, W. and Maheswari, H. 2025. A Structured Approach to Improve Production Process Performance in Operations of Coal Mining Business. Journal of Integrated System. 8, 2 (Dec. 2025), 126–136. DOI:https://doi.org/10.28932/jis.v8i2.11631.