BUSAN– A toxic gas leak at a wastewater treatment plant left four workers unconscious on Wednesday, authorities said.
A chemical, believed to be hydrogen sulfide, leaked at around 1:08 p.m at the plant in the southern port city of Busan. Four out of the seven workers at the scene were harmed due to suspected gas inhalation, they added.
Hydrogen sulfide is a colorless, toxic gas that emits an unpleasant odor. (Yonhap)