Helga, Jil, Yuanita Handayati, and Adirizal Nizar. “STRATEGY TO REDUCE COAL HAULING CYCLE TIME TO INCREASE THE PRODUCTIVITY IN PT ADARO INDONESIA”. JPIM (Jurnal Penelitian Ilmu Manajemen) 8, no. 2 (June 13, 2023): 266–282. Accessed July 3, 2024. https://jurnalekonomi.unisla.ac.id/index.php/jpim/article/view/1605.