This monument marks the location of the Project Shoal nuclear detonation that took place here in the Sand Springs Range southeast of Fallon, Nevada. The black survey marker ten feet behind the stone marker marks the exact underground location. The stone monument reads the following:
A 12-kiloton nuclear device was detonated below this site on October 26, 1963. The nuclear test was conducted as part of the Vela Uniform program sponsored jointly by the U.S. Department of Defense and the Atomic Energy Commission. The nuclear device was detonated in a granite formation at a depth of 1,211 feet. Access was through a horizontal drift that extended from a vertical shaft 1,000 feet west of this location. Objectives of the nuclear detonation were to provide data for detection studies and fundamental research in seismology within a granite geologic media in an active seismic area.
No excavation, drilling, and/or removal of materials is permitted between a level of plus 5,050 feet andplus 3,530 feet above mean sea level and out a horizontal distance of 3,300 feet from this surface ground zero location. Any reentry into drill holes or the shaft within this horizontal restricted area is prohibited.