Hazardous Gas Detection and Environmental Monitoring in Coal Mines Using IoT and GSM-Based Autonomous Robot. International Research Journal on Advanced Engineering Hub (IRJAEH), [S. l.], v. 3, n. 07, p. 3256–3259, 2025. DOI: 10.47392/IRJAEH.2025.0478. Disponível em: https://irjaeh.com/index.php/journal/article/view/1001.. Acesso em: 23 aug. 2025.