N.S. NZEH; S. B. HASSAN. Gravity Separation And Leaching Beneficiation Study On Azara Nassarawa Barite Mineral Ore. Global Journals of Research in Engineering, [S. l.], v. 17, n. J5, p. 41–46, 2017. Disponível em: https://engineeringresearch.org/index.php/GJRE/article/view/1722. Acesso em: 28 apr. 2024.