Two Chinese workers were killed and two were injured in a gas explosion at the Hai Phong Thermo-electric plant Saturday morning.
Fu Fung Wey, 43, was killed instantly. Huang Cao Xun, 39, succumbed to injuries on the way to Hai Phong city hospital.
The injured have not been identified.
Preliminary investigations have shown that the explosion occurred while the men were welding components of a desulfurization system.
Hai Phong Thermo-electric plant opened in December 2009. Technical problems put the plant on a temporary until last month. Following its re-activation, portions of the plant remained under construction.
Further investigations into the explosion are currently underway.