Amsah, La Ode Muh Yazid, L.M. Hilman Kurnia, and Anna Irada La Ode Malim. “Analysis of Coal Quality on Mining Front and Ship Loading in East Kalimantan Province: Evaluasi Kualitas Batubara Pada Front Penambangan Dan Ship Loading Di Provinsi Kalimantan Timur”. JURNAL GEOCELEBES 6, no. 1 (April 27, 2022): 87-92. Accessed April 20, 2024. https://journal.unhas.ac.id/index.php/geocelebes/article/view/19729.