Timeline: Hydropower tunnel caves in, 12 trapped in central Vietnam

Thanh Nien News

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Rescuers bring the first man among the trapped workers out  of the collapsed tunnel on December 19, 2014. Photo: Doc Lap Rescuers bring the first man among the trapped workers out of the collapsed tunnel on December 19, 2014. Photo: Doc Lap

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All of Vietnam's 12 trapped workers, including a woman, were rescued on Friday after being buried alive for 82 hours inside a caved-in tunnel at a hydropower plant in the Central Highlands province of Lam Dong.
Here is a timeline of the accident, considered one of the greatest tunnel collapses in Vietnam's history.
At 7:15 am on Tuesday, December 16, a portion of a water tunnel suddenly caved in while 32 workers were pouring concrete over a tunnel at the Da Dang-Da Chomo Hydropower Plant in Lam Dong Province. Twenty workers escaped unscathed; 12 others were trapped alive.
At 7:40 pm on Tuesday, rescuers successfully drilled a hole that allowed them to pipe oxygen into the collapsed cavern. The workers informed the rescue workers on the other side that they were all still alive. Rescuers then dropped food through the pipe.
All Day Wednesday, December 17, rescuers drilled into the cavern from its top, front, and rear in an effort to reach the trapped workers as quickly as possible. Rainwater poured into the cavern reaching 1.4 meters, threatening to drown the trapped workers.
At dawn of Thursday, December 18, a hole was successfully drilled in the rear of the cavern, allowing rescue workers to pump water out.
Late Thursday, rescuers began to drill a new hole into the left side of the tunnel, following an order from Deputy Prime Minister Hoang Trung Hai.
At 4:20 pm on Friday, December 19, sappers located a gap in the debris on the cavern's left side, which they used to pull the workers out. The workers received first aid on site, before being taken to Lam Dong Province General Hospital.
On Monday (December 22) and Tuesday (December 23), the workers were discharged.

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