Optimization of Sump drying with alternatives concept at ...
PT Bukit Asam, " Daily Rainfall Report for 10 Years ()", 2019, PT Bukit Asam Tbk. (Unpublished). Google Scholar; 23. A. M. Arilia, " Mine Drainage System Design in the Bukit Delapan Pit Case Study of PT Aneka Tambang UBPN Pomalaa, Southeast Sulawesi Province ", 2019, – 70. (In Indonesia Language) Google Scholar; 24.