Rulison
Occurred at 3:00 pm September 10, 1969
Doghead Mountain (south of Rulison, CO)
Result : 8000 ft under Dog mountain a cavity 42m in diameter and 164 m high
remains contining 20,000 metric tons of radioactive rubble (including
plutonium). There is little indication that this site is being
monitored.
AE Systems, California Notes this and other US radioactive sites.
A similar project at Rio Blanco occurred in 1973.
3 - 30 kiloton bombs
The resulting blasts were designed to freeup natural gas
which many suspect is being removed and sold on the open market..
Recommended Reading: American Ground Zero;