Uttarakhand Tunnel Collapse LIVE: Rat-Hole Mining Experts Begin Manual Drilling; Vertical Boring On, 36m Dug

Uttarkashi Tunnel Collapse LIVE: Efforts to rescue 41 workers trapped inside Silkyara under-construction tunnel in Uttarakhand’s Uttarkashi entered 16th day on Tuesday. Rat-hole mining experts have begun manual drilling through last 10- 12-metre stretch of debris of collapsed portion of under-construction tunnel on Char Dham route. Simultaneously, vertical drilling from above tunnel has reached depth of 36 metres out of 86 metres needed. Twelve rat-hole mining experts are being involved in process, which was earlier being carried out by auger machine that got stuck in rubble, forcing officials to focus on alternative option.

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