SEOUL, May 17 (Xinhua) -- Thirteen workers were injured Thursday in a chlorine gas leakage accident at a chemical factory in southeastern South Korea, with no life-threatening wound reported yet, Yonhap news agency reported, citing police and firefighting authorities.
Chlorine gas was leaked at a factory of Hanwha Chemical in the southeastern port city of Ulsan at about 10:00 a.m. local time.
Six employees of Hanwha Chemical contractor, working near the site, were taken to a nearby hospital, while seven more workers at a separate plant near the Hanwha factory were wounded and hospitalized.
The injured had difficulty breathing and suffered from a runny nose, feeling dizzy and nauseous.
The accident was estimated to have been caused by a crack in valve or pipe carrying chlorine gas to storage tank.
Police and firefighting authorities are investigating the exact cause of the accident.