New Partnership Signals Continued Interest in American Manufacturers Seeking US-Made Magnets STILLWATER, Okla., May 27, 2025 (GLOBE NEWSWIRE) -- USA Rare Earth, Inc. (Nasdaq: USAR) (USAR or the Company), which is building out America's first fully domestic rare earth element magnet production supply chain that includes the mining and processing of heavy rare earths and other critical minerals, today announced it has signed a memorandum of understanding (MOU) with Shoreview, MN-based PolarStar Magnetics (Pol ...