Mandal, R., Maity, T., Chaulya, S. K., Prasad, G. M., & Verma, R. P. (2022). Automation of Underground Coal Mines Using PLC. Journal of Mines, Metals and Fuels, 64(5), 174–180. Retrieved from https://informaticsjournals.com/index.php/jmmf/article/view/31507