Event Brief
US conducts chemical high-explosive test to detect nukes
By The BriefBrief · Sources (1)
Filed: Sep 30, 2026 at 8:10 PM ET
Summary: The US National Nuclear Security Administration carried out a subsurface, non-nuclear chemical high-explosive experiment on Wednesday at Nevada National Security Site. The Energy Department said the test was intended to improve US ability to detect low-yield nuclear explosions, including “decoupled” blasts.
WHO: US National Nuclear Security Administration (NNSA)
WHAT: Conducted a subsurface, non-nuclear chemical high-explosive experiment using chemical high-explosives and radiotracers to improve detection of low-yield nuclear explosions.
WHEN: Sep 30, 2026
WHERE: Nevada National Security Site, P Tunnel in Area 12
WHY: To improve the United States’ ability to detect low-yield nuclear explosions, including “decoupled” explosions.
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