The memory chip giant believes the incident may have originated from a gas pipeline...

The leak of the toxic gas happened after a fire broke out, the official said, adding that the blaze has been contained.

The memory chip giant believes the incident may have originated from a gas pipeline...

SK Hynix evacuated 3,600 workers from its Cheongju chip plant after a fire triggered a hydrogen fluoride gas leak. Production was unaffected.

Five of the seven were suffering from eye irritation thought to be caused by fluorine gas.