M. Y. Indriati, R. Z. Rasi, B. Setiaji, and S. D. . Hadiwinata, “Identifying and Eliminating Waste in a Coal Mining Industry: The Value Stream Mapping Analysis”, ijscet, vol. 14, no. 5, pp. 290–304, Oct. 2023, Accessed: Aug. 13, 2026. [Online]. Available: https://journal.uthm.edu.my/index.php/IJSCET/article/view/12146