The decision comes after Mr Thompson has faced pressure from Aboriginal groups,major investors and Australian government leaders over Rio’s decision to destroy the culturally significant rock shelters in Western Australia’s Pilbara region against the wishes of the land’s traditional owners.
A board-led review of the cause of the incident initially determined no one would be stood down over the matter. But an investor revolt eventuallyforced the departures of former chief executive Jean-Sebastien Jacques and two of his deputies.
“I am proud of Rio Tinto’s achievements in 2020,including our outstanding response to the COVID-19 pandemic,a second successive fatality-free year,significant progress with our climate change strategy,and strong shareholder returns,” Mr Thompson said.
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“However,these successes were overshadowed by the destruction of the Juukan Gorge rock shelters at the Brockman 4 operations in Australia and,as chairman,I am ultimately accountable for the failings that led to this tragic event.
“While I am pleased with the progress we have made in many areas,the tragic events at Juukan Gorge are a source of personal sadness and deep regret,as well as being a clear breach of our values as a company.”
The Rio director who led the board’s review,Michael L’Estrange,a former Australian high commissioner to the United Kingdom,also said on Wednesday he would step down following this year’s annual general meeting.