PERANGIN-ANGIN, H. P. . COAL WASHING USING CHANCE CONE WITH IRON SAND MEDIA: PENCUCIAN BATUBARA MENGGUNAKAN CHANCE CONE DENGAN MEDIA PASIR BESI. INTAN Jurnal Penelitian Tambang, [S. l.], v. 2, n. 2, p. 91–96, 2022. DOI: 10.56139/intan.v2i2.29. Disponível em: http://jurnal-intan.ac.id/index.php/intan/article/view/29. Acesso em: 29 nov. 2025.