Tunnel collapse, no rebuild: how smart geotech and quick thinking kept Yaramoko running after a catastrophic portal failure in Burkina Faso

Final remediation works at the Yaramoko portal showing the diversion wall, graded boxcut slopes, and a geofabric-waste rock overlay designed to reduce runoff velocity and minimise erosion into the decline.

When a critical piece of underground infrastructure collapsed at Burkina Faso’s Yaramoko Mine, the clock was ticking. The Z55...


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