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Twelve rat-hole mining experts are involved in the horizontal excavation through the last 10 or 12-metre stretch of debris of the collapsed portion of the under-construction tunnel on Uttarakhand's Char Dham route.
A team of “rat-hole miners” began drilling operations through the rubble. Twelve rat-hole mining experts will be involved in manual drilling. Rat hole mining is a practice of extracting small quantities of coal from narrow burrows or deep tunnels.
The rat-hole mining experts have been trying to create a passageway to rescue the trapped workers by inserting pipes into dug-out areas so that the trapped workers can be brought out on wheeled stretchers.
The breakthrough point is 57 metres, the chief minister told reporters in Silkyara
Rescuers in India are metres away from 41 men trapped in a collapsed highway tunnel in the Himalayas for more than two weeks, and are confident of...