Kumar, Rajneesh, Mohit Rastogi, Chandra Shekhar Singh, Rakesh Ranjan, Tanmoy Pramanik, and Bhuvnesh Kumar Gupta. 2023. “A Comprehensive Assessment of Applications of Drone Technology in the Coal Mining Industry”. Journal of Mines, Metals and Fuels 71 (3):304-10. https://doi.org/10.18311/jmmf/2023/33709.