Two die in fiery WA crash TWO people are dead, a truck is on fire and a major West Australian road will remain closed for hours after a crash involving a truck carrying ammonium nitrate. The Great Northern Highway remained closed on Thursday morning, after a car and a truck collided about 25km north of Wubin, 300km northeast of Perth, at about 10.30pm on Wednesday. The driver of the truck and a passenger in the car died at the scene said WA police. The car's driver escaped serious injury and was airlifted to Royal Perth Hospital. Ammonium nitrate is highly flammable fertiliser, commonly used at mines as an explosive additive. The double fatality takes WA's road toll to five in the past two days. Anyone with information should contact Crime Stoppers on 1800 333 000.