MILDAN, D.; JOHAN, M.; HAKIM, H. Z.; ARMY, E. K.; MAULADIKA, A. I. ESTIMATE COAL RESOURCES IN BLOCK 3 KEBAN SOUTH SUMATERA USING USGS CIRCULAR 891. INTAN Jurnal Penelitian Tambang, [S. l.], v. 9, n. 1, p. 8–15, 2026. DOI: 10.56139/intan.v9i1.370. Disponível em: https://jurnal-intan.ac.id/index.php/intan/article/view/370. Acesso em: 30 may. 2026.