07:20 AM EDT, 03/25/2026 (MT Newswires) -- Energy Fuels ( UUUU ) , up 4% in U.S. pre-market trading, Wednesday said it has produced its first kilogram of terbium (Tb) oxide at its White Mesa Mill in Utah, achieving a purity of 99.9% Tb at pilot scale.

Energy Fuels ( UUUU ) recently produced nearly 30 kg of 99.9% pure dysprosium (Dy) oxide production, another critical heavy rare earth oxide used in permanent magnets.

Adding terbium and dysprosium to permanent magnets makes a superior product for electric vehicles, drones, robotics, and defense technologies. The Mill expects to continue producing one kilogram of terbium oxide per week in its existing pilot circuit, followed by pilot production of samarium (Sm), europium (Eu), and gadolinium (Gd) oxides.

Energy Fuels ( UUUU ) plans to expand its heavy rare earth element production capability at its existing Mill circuits. Subject to regulatory approvals and sufficient quantities of monazite sand feedstock, the expanded commercial circuit is expected to be operational next year, with planned production recovery of up to 35 tonnes of Dy, 12 tonnes of Tb per year and potentially other heavy rare earth elements. This is in addition to the 850 - 1,000 tonnes of neodymium-praseodymium (NdP)r, from processing up to 10,000 tonnes of monazite per year through existing circuits, a statement noted.

Energy Fuels ( UUUU ) shares were last seen up US$0.83, to US$18.87, in New York trading.