During retreat mining, the roof systematically collapses behind the removed pillars in a predetermined line. Even so, while this increases productivity, it also poses significant safety hazards.
Key fact: Retreat mining produces roughly 10% of all coal gathered from underground mining
Since these pillars support the roof of the room being excavated, the removal of them weakens the entire structure and increases the risk of collapse. Any amount of roof fall can halt mining operations, damage equipment, and cause serious injuries or even fatalities.
The hazards inherent in retreat mining require mine operators to be diligent in gathering geotechnical analyses of every panel created during room and pillar mining so that they can preempt the risks of roof falls.
Increases coal recovery
Improves quality of run-of-mine coal
Increases overall productivity
Explore solutions for Pillar Removal in Retreat Mining
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