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HWASEONG, South Korea, Aug. 2 (Yonhap) -- Two workers were killed and one injured Friday when a chemical tank exploded at a plant in the southern city of Hwaseong, police and fire officials said.
The 60,000-liter outdoor storage tank containing some 20,000 liters of sodium aluminate exploded at around 11:55 a.m. at the chemical factory in Hwaseong, 60 kilometers south of Seoul, they added.
Police said they suspect the explosion occurred when the three workers were doing welding work to install a handrail next to the tank.
The explosion might have occurred when the sodium aluminate, which is used for many industrial and technical applications, came into contact with the heat source, police officers said.
The exact condition of the injured person, only identified by his surname Yim, is still unknown, police said.
An investigation is under way to determine the exact cause of the accident, according to the police.
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