Rio Tinto’s new Gudai-Darri iron ore mine will cost about $800 million more than originally expected, in a fresh example of the inflationary pressures in Western Australia’s resources industry.

Commissioned as a $US2.6 billion project called “Koodaideri” in November 2018, the mine and its associated infrastructure was completed on Wednesday under the revised name of “Gudai-Darri” at a cost of $US3.1 billion ($4.5 billion).