A Technical Review on IoT Based Mining Tracking and Safety Helmet . International Journal of Innovative Research in Computer Science & Technology, [S. l.], v. 9, n. 4, p. 44–47, 2021. Disponível em: https://journals.acspublisher.com/index.php/ijircst/article/view/11383. Acesso em: 12 apr. 2025.