Operation Hardtack 1958 8KT nuclear explosion video

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Operation Hardtack 1958 8KT nuclear explosion video

Operation Hardtack was a series of 72 nuclear tests conducted by the United States in 1958. With test moratoriums on the horizon, American weapons labs rushed out many new designs.

Hardtack I was carried out in the Pacific Ocean, at Bikini Atoll, Enewetak Atoll, and Johnston Island.

One of the tests conducted was named "Umbrella"
Test: Umbrella
Time: 23:15 8 June 1958 (GMT)
11:15 9 June 1958 (local)
Location: Enewetak lagoon
Test Height and Type: Underwater, -150 feet
Yield: 8 kt

Umbrella was a DOD sponsored weapons effects test for a medium depth underwater explosion. A Mk-7 bomb was used for the test (30 inches in diameter, 54 inches long, device weight 825 lb.) in a heavy pressure vessel (total weight 7000 lb.).

The device was detonated on the lagoon bottom NNE of Mut (Henry) Island. An underwater crater 3000 feet across and 20 feet deep was produced.



 http://en.wikipedia.org/wik...

operation-hardtack-nuclear-test.jpg - 12.73kb
By netchicken: posted on 25-3-2009

Here's a better pic of test shot "Umbrella" from Operation Hardtack I.

http://nuclearweaponarchive.org/Usa/Tests/Ht1umbr3.jpg
By mg.mikael: posted on 4-4-2009








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