The West's Rare Earth Reckoning: Carester, China and the Coming Supply Chain Crisis

Highlights

• Carester's Caremag refinery in France faces a critical feedstock gap for dysprosium and terbium, with key suppliers still years from commercial production.
• Western initiatives like MP Materials, Energy Fuels, and Saskatchewan Research Council show progress but cannot yet replace China's integrated heavy rare earth supply chain.
• REEx's Transition Vulnerability Window framework warns that Western dependence on Chinese rare earths could persist into the mid-to-late 2030s without coordinated policy intervention.
• Political timelines for rare earth independence are dangerously misaligned with the industrial timelines required to build mines, refineries, and qualified magnet supply chains.