India, April 18 -- South Eastern Coalfields Limited (SECL) is set to become the first coal PSU in India to adopt paste fill technology for coal mining-marking a major step toward sustainable and environmentally friendly mining practices.To implement this innovative underground mining technology, SECL has signed a Rs. 7040 crore agreement with TMC Mineral Resources Private Limited.Under this agreement, large-scale coal production will be undertaken using paste fill technology in the Singhali underground coal mine located in SECL's Korba area. Over a period of 25 years, the project is expected to produce approximately 8.4 million tonnes (84.5 lakh tonnes) of coal.What is Paste Fill Technology?Paste filling is a modern underground mining metho...