After 17 days, Indian rescuers have pulled out all 41 construction workers trapped inside a collapsed tunnel in the Himalayas. Andrew Chang goes through a step-by-step breakdown of the dangerous rescue efforts and the limited space in which they had to work.
source https://www.cbc.ca/news/canada/rescued-how-indian-miners-escaped-a-collapsed-tunnel-1.7042956?cmp=rss
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