This monument marks the location of the Project Faultless nuclear detonation that took place here in the remote Hot Creek Valley, Nevada.  Splits & faults in the land nearby are evidence of the underground blast.  The monument reads the following:

United States Atomic Energy Commission

Dr. Glenn I. Seaborg, Chairman

Project Faultless

January 19, 1968

A nuclear detonation was conducted below this spot at a depth of 3,200 feet.  The device, with a yield of less than one megatron was detonated to determine the environmental and structural effects that might be expected should subsequent higher yield underground nuclear tests be conducted in this vicinity.

No excavation, drilling, and/or removal of materials is permitted without U.S. Government approval within a horizontal distance of 3,300 feet from the surface ground zero location (Nevada State Coordinates N1, 414,340 and E629, 000, Nye County, Nevada.)  Any reentry into U.S. Government drill holes within this horizontal restricted area is prohibited.