Sign in

Private company

Pilbara Iron

Logo: Nazrila, CC BY-SA 4.0, via Wikimedia Commons3

Mining company

Pilbara Iron manages assets for Hamersley Iron Pty Ltd, a subsidiary of Rio Tinto, and Robe River Iron Associates, an unincorporated joint venture between Rio Tinto (53%) and Japanese steel companies Mitsui Iron Ore Development (33%) and Nippon Steel (14%). All of these companies are involved in the mining of iron ore, predominantly from the Pilbara region of Western Australia.2 It was founded by Rio Tinto Group.1 It is part of Rio Tinto Group.1 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

2004Founded1

See how the biggest companies compare on our leaderboards

Pilbara Iron manages assets for Hamersley Iron Pty Ltd, a subsidiary of Rio Tinto, and Robe River Iron Associates, an unincorporated joint venture between Rio Tinto (53%) and Japanese steel companies Mitsui Iron Ore Development (33%) and Nippon Steel (14%). All of these companies are involved in the mining of iron ore, predominantly from the Pilbara region of Western Australia.2

Corporate structure

Pilbara Iron is part of a group headed by Rio Tinto Group. 13 entities, 6 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

  • Rio Tinto Group London
    • Pilbara Iron Perth
    • Anglesey Aluminium Subsidiary · Holyhead
    • Hathor Exploration Subsidiary · Vancouver
    • Rio Tinto (United States) Subsidiary · Denver, United States
    • Rio Tinto Alcan Subsidiary · Montreal, Quebec, Canada
      • Sterling Road Site (Rio Tinto Alcan) Subsidiary · Toronto, Canada
    • Rio Tinto Aluminium Subsidiary
    • Rio Tinto Coal Australia Subsidiary · Brisbane
    • Holden Mine Subsidiary · Chelan County, United States
    • Mount Rosser Bauxite Residue Disposal Area Subsidiary · Jamaica
    • Rio Tinto (Canada) Subsidiary · Canada
    • Rio Tinto (France) Subsidiary · France
    • Corumbá Owned · Corumbá, Brazil
    • Maison Alcan Owned · Ville-Marie, Canada
    • Mount Tom Price mine Owned · Shire of Ashburton, Australia
    • Rio Tinto Borax Mine Owned · California, United States

Built from subsidiaries, stakes and holdings from Wikidata (CC0); major holders from Schedules 13D and 13G. Each entity in the chart links to its source.

The story

Founded by Rio Tinto Group in 2004.1

Products and brands

  • iron ore

Listed on Wikidata.1

Subsidiaries and ownership

Parent company

From Wikidata.1

Timeline

  1. 2004Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

  1. 1
  2. 2
  3. 3