Paste Fill Technology

Paste Fill Technology: South Eastern Coalfields Limited (SECL) is set to become the first coal PSU in India to adopt paste fill technology for coal mining.

• About: Paste filling is a modern underground mining method that eliminates the need to acquire surface land.
• Process: After coal extraction, the mined-out voids are filled with a specially prepared paste made from fly ash, crushed overburden from opencast mines, cement, water, and binding chemicals.
• Benefit: This process prevents land subsidence and ensures the structural stability of the mine.
• Sustainability: The paste utilizes industrial waste materials, making the process environmentally sustainable and promoting waste recycling.