United States Atomic Energy Commission
Dr. Glenn T. Seaborg, Chairman
Project Gnome
December 10, 1961
The first nuclear detonation in the Plowshare Program to develop peaceful uses for nuclear explosives was conducted below this spot at a depth of 1,216 feet in a stratum of rock salt. The explosive, equivalent to 3,100 tons of TNT, was detonated at the end of a horizontal passage leading from a vertical shaft located 1,116 feet southwest of this point. Among the many objectives was the production and recovery of useful radioactive isotopes, the study of heat recovery, the conduct of neutron physics experiments, and the provision of a seismic source for geophysical studies.

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31 October 2023