Pengaruh Penambahan NaOH dan Ca(OH)2 Terhadap Penurunan Kadar Logam Berat (Fe) di Kolong Tambang 23 Desa Kimhin Kecamatan Sungailiat: The effect of the addition NaOH and Ca(OH)2 at reduced levels of heavy metal (Fe) in Tambang 23 Kimhin Village of Sungailiat Subdistrict. MINERAL, [S. l.], v. 2, n. 2, p. 56–61, 2020. DOI: 10.33019/mineral.v2i2.1552. Disponível em: https://www.journal.ubb.ac.id/index.php/mineral/article/view/1552. Acesso em: 19 apr. 2026.