Ward 250 advanced nuclear reactor reaches self-sustaining criticality ahead of July 4 deadline

ORANGEVILLE, Utah (ABC4) — Valar Atomics announced that its Ward 250 nuclear reactor has reached self-sustaining criticality and completed zero-power testing in a Utah energy lab ahead of the July 4 deadline. President Donald J. Trump signed an executive order in May 2025 reforming nuclear reactor testing at the Department of Energy. As part of [...]