ENHANCING MINING WORKER SAFETY WITH AN INTERNET OF THINGS (IOT)-ENABLED SMART HELMET. International Journal of Engineering and Science Research, [S. l.], v. 9, n. 4, p. 31–37, 2019. Disponível em: https://ijesr.org/index.php/ijesr/article/view/1253. Acesso em: 13 dec. 2025.