Project Shoal, which took place at a location near Fallon, Nevada on October 26, 1963 at 1000 PDT, was an underground nuclear detonation conducted as a part of the Vela program of the Department of Defense. The Off-Site Radiological Safety Program of the U. S. Public Health Services Southwestern Radiological Health Laboratory monitored the public area surrounding the site and collected and analyzed several hundred water, milk, and air samples before and for several weeks after the event. Analysis of these samples indicated that the radioactive material from the Shoal event was completely contained. During post-shot drilling operations an intermittant release of gaseous material containing fresh fission products occurred, but was not detected on air samplers located in populated areas or in milk and water samples taken since that time.
Rept. on Vela Uniform, Proj. Shoal, Fallon, Nev., 26 Oct 1963. DOI: 10.21236/AD0607953