Ships waiting to be loaded with iron ore are seen at the Fortescue loading dock located at Port Hedland

Ships waiting to be loaded with iron ore are seen at the Fortescue loading dock located at Port Hedland

Chain of iron: China's purchases of Australian minerals such as iron ore, seen here being loaded at Port Hedland in Western Australia, are vital to the nation's economic health. Photo: Reuters/David Gray

December 22, 2016 7:10 PM (UTC+8)