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MP Materials Forms Joint Venture with Saudi Arabian Mining Company to Develop Rare Earth Refinery

MP Materials Corp. (MP) | November 19, 2025

By Olivia Collins

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MP Materials Corp. announced a strategic joint venture with the U.S. Department of War and the Saudi Arabian Mining Company (Maaden) to build a rare earth refinery in Saudi Arabia.

The joint venture aims to diversify the global rare earth supply chain and strengthen U.S. and Saudi economic and national security interests.

This partnership will leverage Saudi Arabia's resources and infrastructure to produce rare earth materials for the manufacturing and defense sectors.

Strategic Partnership

Formation of a joint venture between MP Materials, the DoW, and Maaden to develop a rare earth refinery.

Supply Chain Diversification

Efforts to rebalance the global rare earth supply chain and enhance national security interests.

Capital-Light Structure

Joint venture structure with U.S. oversight and alignment with national security objectives.

Expansion Opportunities

Potential for magnet manufacturing collaboration in Saudi Arabia and significant growth for MP Materials.

Public-Private Partnership

Continued investment and expansion in domestic refining and manufacturing capabilities in the U.S.

  • The joint venture signifies a major stride in securing critical supply chains and boosting industrial resilience.
  • MP Materials' expertise in rare earth separation and refining will play a crucial role in advancing the rare earth supply chain.
  • This collaboration aims to deepen economic and security ties between the U.S. and Saudi Arabia, reducing reliance on adversarial sources.

The formation of the joint venture between MP Materials, the U.S. Department of War, and Maaden marks a significant advancement in the global rare earth industry, with implications for supply chain diversification and national security.