Real-Time Safety Monitoring System In Coal Mines Using IOT. International Journal of Multidisciplinary Engineering In Current Research, [S. l.], v. 11, n. 4s, p. 351–356, 2026. DOI: 10.63665/d49ty288. Disponível em: https://ijmec.com/index.php/multidisciplinary/article/view/1074. Acesso em: 20 may. 2026.