BREN Tower

"[1] The structure was owned by the Department of Energy and maintained by National Security Technologies.

As part of the Nevada Test Site, it was also located in restricted airspace (R-4808N).

In 1966, after the 1963 Nuclear Test Ban Treaty banned open-air nuclear testing, the tower was dismantled and despite its immense size moved from its original location to Jackass Flats in Area 25 of the Nevada Test Site, where it was used for Operation HENRE (High Energy Neutron Reactions Experiment), a series of radiation measurement experiments using a small linear accelerator to provide neutrons.

It was supported by 5.5 mi (8.9 km) of guy wires designed to withstand winds exceeding 120 mph (190 km/h).

[3] The National Nuclear Security Administration listed reasons for the removal as safety concerns for nearby workers, unreasonable costs to restore the structure to working condition and hazards to air traffic.