In 2004, Rio Tinto announced that Robe and Hamersley would start merging operations under the new Pilbara Iron entity.

[3] Each company continues to market products separately and retains ownership and profits from the underlying mines, as well as strategic development of their own mineral resources.

[10] February 1964: a proposal is announced for Hamersley Iron to export 65 million tons over 15 years starting in 1967 to the Japanese steel industry.

[13] August 1965: Hamersley agreed to sell to Kobe Steel $15,750,000 worth of low grade iron ore from Mount Tom Price bringing the total in sales contracts to $825 million.

[14] In June 1979, Kaiser Steel sold its then 28.3% in Hamersley Holdings Ltd. to Conzinc Riotinto for $207.5 million, bringing the Rio Tinto share of the company to 54%.