The Rhetoric of Containment: Porous Boundaries at the Nevada National Security Site

Established in 1950, the Nevada Test Site, now the Nevada National Security Site, was constructed as a deliberately forbidden landscape. It was selected because it was geographically remote, then militarized, sealed from public access, and presented as a controlled environment. The idea was that radioactive materials would be contained within the desert, their dangers confined to a secure perimeter.

Between 1951 and 1992, the site hosted hundreds of atmospheric and underground nuclear detonations. While the state restricted physical access to the testing grounds, radioactive fallout did not respect such boundaries. Prevailing winds carried iodine-131 and other radionuclides across Nevada, Utah, and Arizona, exposing rural communities to invisible contamination. Residents of St. George and surrounding areas, later known as “downwinders,” experienced elevated rates of thyroid disorders, leukemia, and other cancers. Yet federal officials repeatedly reassured the public that fallout levels were safe.

Today, the NNSS remains largely closed to the public, its vast desert expanse still governed by federal security protocols. Civilian access is limited to tightly controlled monthly tours that guide visitors through select Cold War–era facilities. This partial opening, however, does not signal environmental rehabilitation. The site continues to function as a repository for radioactive and hazardous materials.

The desert was imagined as empty and expendable; contamination was framed as localized and manageable. In practice, radiation dispersed through air, water, livestock, and human bodies, rendering containment both porous and illusory. Situating the Test Site within broader histories of toxic landscapes and Cold War governance, this paper argues that these secured boundaries functioned rhetorically rather than materially. The site was closed to citizens, but its fallout was not.