Singh, Satyendra K., Raghavendra Singh, Awanindra P. Singh, and Harshit Agrawal. 2022. “Closing of a Running Mine and Suggesting a New Approach of Winning of Otherwise-Left Unextracted Coal Reserves”. Journal of Mines, Metals and Fuels 64 (8):335-40. https://www.informaticsjournals.com/index.php/jmmf/article/view/31553.