Gas poisoning kills four in Vietnam
Four people have died from methane gas poisoning in an illegal coal mine in the north-east Vietnamese province of Quang Ninh, the police said on Tuesday. The accident occured las Friday when a group
Four people have died from methane gas poisoning in an illegal coal mine in the north-east Vietnamese province of Quang Ninh, the police said on Tuesday. The accident occured las Friday when a group