ABU, Mohamed Mustapha; OLOPADE, Muteeu Abayomi. Evaluation of Radon-222 concentration and its associated risks in groundwater sources of communities around selected mining sites in Sierra Leone. Journal of Applied Engineering Science and Technology, [S. l.], v. 6, n. 1, 2026. DOI: 10.69717/jaest.v6.i1.150. Disponível em: https://journals.univ-biskra.dz/index.php/jaest/article/view/150.. Acesso em: 30 apr. 2026.