The dam broke on July 23 and caused a severe flash flood in Laos
Hoang Anh Gia Lai JSC already completed the deal with a Lao company to send a helicopter from Vientiane to save the workers.
There were no signs of the flood receding in high-lying areas yet. It was initially reported that 28 people had died, however, the figure was revised to include 18 bodies that have been found and 200 people still missing.
The dam is part of the Xepian Xe-Namnoy hydroelectric power project in Attapeu Province, which is a collaborative project between Laotian, Thai and South Korean firms. It is estimated to cost USD1.2bn and has a capacity of 410 MW. It was built in 2013 and expected to be completed in 2019.
The dam broke on July 23 and caused a severe flash flood in the area.