Rio Tinto chief executive Jean-Sebastien Jacques will step down after the mining giant's handling of the Juukan Gorge scandal.
Chris Salisbury, chief executive of iron ore and Simone Niven, group executive, corporate relations - also succumbed to investor pressure, and have stepped down with immediate effect, both leaving the company on December 31, 2020.
Jacques will remain in his role until a successor is found or March 31, 2021, whichever is earlier.
Rio Tinto has faced scrutiny over its decision to blow up caves in the Western Australia Pilbara region in May, which were highly significant to the traditional landowners.
Rio Tinto said "significant stakeholders have expressed concerns about executive accountability for the failings identified" in the company's Board Review of Cultural Heritage Management