On 28 November, a 17-day-long ordeal came to an end when 41 workers trapped inside the Uttarkashi's Silkyara Tunnel, were pulled out by rescue teams. While the advanced machinery failed after a point of time to liberate trapped workers, rescuers resorted to the assistance of a banned or outlawed practice known as "rat-hole" mining. Rat-hole mining proved successful in reaching the trapped workers. So, what is it & how did it help in the rescue op?
first published: Nov 30, 2023 12:31 pm
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