US conducts underground blast test to boost nuclear detection capabilities

The US National Nuclear Security Administration executed a subsurface, non-nuclear chemical high-explosive experiment aimed at refining detection methods for low-yield nuclear explosions, according to the Department of Energy.

The test represents part of Washington's ongoing efforts to improve its nuclear detection and verification capabilities. Low-yield nuclear weapons have become an increasing concern for US defence planners, with the technology potentially lowering the threshold for nuclear weapons use.

The experiment involved controlled detonation of conventional explosives underground, allowing scientists to gather data on seismic signatures and other detection indicators. Such testing helps calibrate monitoring systems and improve accuracy in distinguishing between conventional explosions and nuclear detonations.

The United States operates a global network of seismic sensors and other detection systems designed to monitor for unauthorised nuclear activity. Enhancing these capabilities is seen as critical to maintaining international security arrangements and verifying compliance with nuclear treaties.