Mitsui Invests $5.3 Billion in Rio Tinto's Rhodes Ridge

Mitsui Invests $5.3 Billion in Rio Tinto’s Rhodes Ridge

Japanese trading conglomerate Mitsui & Co. has announced the acquisition of a 40% stake in the Rhodes Ridge iron ore project in Western Australia for $5.34 billion. This significant investment underscores Mitsui’s commitment to securing essential resources and enhancing its long-term earnings.

Details of the Acquisition

Mitsui’s investment involves purchasing a 25% interest from VOC Group Limited for $3.34 billion and a 15% stake from AMB Holdings for $2 billion. Post-transaction, the ownership structure of the Rhodes Ridge project will be:

  • Rio Tinto: 50%
  • Mitsui & Co.: 40%
  • AMB Holdings: 10%

The deal is expected to conclude by March 2026, pending regulatory approvals and fulfillment of other conditions.

About Rhodes Ridge

Located in the resource-rich Pilbara region, Rhodes Ridge is recognized as one of the world’s largest undeveloped iron ore deposits, boasting an estimated 6.8 billion tons of mineral resources. The project is slated to commence production by 2030, with initial outputs projected at 40 million tons annually, and potential expansion to over 100 million tons in subsequent phases. Mitsui’s share is expected to start at 16 million tons per year, eventually exceeding 40 million tons.

Strategic Synergies and Infrastructure

The proximity of Rhodes Ridge to existing operations, such as the Robe River joint venture—where both Mitsui and Rio Tinto have established partnerships—offers strategic advantages. Utilizing existing railways, ports, and power infrastructure is anticipated to reduce capital expenditures and operational risks. Additionally, iron ore extracted from Rhodes Ridge will be integrated into Rio Tinto’s sales network, facilitating exports to Asian markets, including Japan.

Profiles of the Companies Involved

  • Mitsui & Co.: Established in 1947, Mitsui is a diversified global trading and investment company headquartered in Tokyo, Japan. The company’s business portfolio spans sectors such as energy, machinery, chemicals, food, and logistics. With a presence in 61 countries and regions, Mitsui is dedicated to creating new value through its extensive global network and commitment to sustainability.
  • Rio Tinto: Founded in 1873, Rio Tinto is a leading Anglo-Australian multinational mining corporation with joint headquarters in London and Melbourne. As one of the world’s largest metals and mining companies, Rio Tinto’s operations encompass the extraction and processing of minerals like iron ore, aluminum, copper, and diamonds. The company operates in 35 countries, employing over 57,000 people, and is committed to finding innovative ways to provide the materials essential for human progress.

Market Implications

This investment aligns with Mitsui’s strategic objective to enhance its iron ore production capabilities, especially in response to the anticipated growth in global steel demand driven by markets in India and Southeast Asia. For Rio Tinto, the development of Rhodes Ridge is pivotal in sustaining its position as a leading iron ore supplier, particularly as existing mines face declining ore grades.

The collaboration between Mitsui and Rio Tinto in the Rhodes Ridge project exemplifies a synergistic partnership poised to meet the increasing global demand for high-quality iron ore, thereby contributing to the economic development of the Asia-Pacific region and beyond.