Caption:
The tail section of a U.S. Navy Blimp is shown with the Stokes cloud in background. Blimp was in temporary free flight in excess of five miles from ground zero when collapsed by the shock wave from the blast. The airship was unmanned and was used in military effects experiments on blast and head. Navy personnel on the ground in the vicinity of the experimental area were unhurt. Stokes test of the LASL XW-30 multi-purpose warhead; used in TADM (tactical atomic demolition munition), and Talos SAM (surface-air-missile) warhead. All oralloy (highly enriched uranium) DT gas-boosted system. Balloon shot was detonated at 1500 feet on August 7, 1957. Operation Plumbbob was a series of nuclear tests conducted between May 28 and October 7, 1957, at the Nevada Test Site. It was the biggest, longest, and most controversial test series in the continental United States. The operation consisted of 29 explosions, of which only two did not produce any nuclear yield.