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Paste Fill Technology
July 18 , 2025
16 hrs 0 min
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- The South Eastern Coalfields Limited (SECL) is becoming the first coal PSU to implement paste fill technology for underground coal mining.
- It will transform how coal is extracted in areas with surface constraints while minimising environmental impact.
- It establishes a framework for the large-scale coal production using paste fill technology at the Singhali underground coal mine in the Korba area of Chhattisgarh.
- The process involves extracting coal from underground seams and then filling the resultant voids with a specially engineered paste.
- This paste consists of a mixture of fly ash, crushed overburden from opencast mines, cement, water, and binding chemicals.
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