The Vietnamese government has approved the resumption of work at the 23-MW Da Dang-Da hydropower plant, following the collapse of a tunnel in December.
Work at the site was suspended at the US$22.4 million project when a dozen workers were trapped for three days. Reports show the collapse occurred in a 20-meter-long section about 500 meters from its opening.
"During construction, ground subsidence occurred and caused soil and sand to be swept by underground water into the tunnel while [underground construction] failed to tackle the problem," said Vo Nhat Thang, chairman of project investor Long Hoi Hydropower Joint Stock Co.
Lam Dong province's Department of Industry and Trade said it would allow work to resume construction on the plant earlier this week on condition that the potential dangers were addressed, and that the Long Hoi Hydropower Co. refund moneys lent to recover the workers.
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