Baku-APA. Seven workers died and six others were trapped in a coal mine accident in northeast China's Heilongjiang Province,the provincial coal mine safety administration said Wednesday, APA reports quoting XInhua
.
Three worker entered the Yongsheng colliery in Dongning County to do maintenance work but fainted due to poisonous gas in the colliery at around 10:30 a.m. Tuesday, the administration said.
Rescuers were sent to the site, but some of them were also poisoned.
The rescue work is still underway on Wednesday.