Mitsui Iron Ore Development Pty Ltd is an Australian proprietary company incorporated in 1970 and headquartered in Perth, Western Australia. It serves as a key subsidiary within the Mitsui & Co., Ltd. group, a major Japanese general trading company, focusing on mineral resources development.
The company acts as a holding entity for Mitsui’s iron ore investments in Australia. It holds a 33% interest (20% direct and 13% indirect) in the Robe River Iron Associates unincorporated joint venture, operated by Rio Tinto, alongside Nippon Steel. This JV manages iron ore mines and related infrastructure in the Pilbara region, including the Robe Valley and West Angelas operations, with annual production of approximately 65 million tonnes of lump and fines iron ore shipped primarily to Asian steelmakers via the port of Cape Lambert.
Mitsui Iron Ore Development participates in additional projects, such as the acquisition of a 40% interest in the Rhodes Ridge iron ore mine and interests in other BHP-operated assets through related entities. It employs around 15-17 staff locally and emphasizes sustainable mining practices, community support in remote areas, and synergies with existing rail and port infrastructure.
As part of Mitsui’s broader mineral and metal resources business unit, the company contributes to stable global supply chains for iron ore, supporting steel production while advancing Mitsui’s strategic goals in resource security and low-carbon initiatives, including its role as an equal equity partner in the NeoSmelt demonstration project for decarbonised ironmaking technology.
Also known as MIOD.
None yet. When a new project in the record names Mitsui Iron Ore Development as owner, partner or investor, it shows here.
Industry investment and policy support sustain demonstrations across blast‑furnace retrofits, DRI–ESF, and electrochemical routes while economics and infrastructure shape deployment timing.
