62 new pictures will be made public with confidential American "nuclear test recording film"

Films that showed the state of nuclear tests conducted by the United States from 1945 to 1962 were received by the US government for the first time in 55 yearsPublished in March 2017It was done. Nine months after that, in December 2017, 62 new images were made available for viewing on YouTube and others.

LLNL releases newly declassified test videos | Lawrence Livermore National Laboratory
https://www.llnl.gov/news/llnl-releases-newly-declassified-test-videos

The film containing the state of the experiment at that time was preserved for a long time as a confidential treatment in a strictly managed storage cafe in various parts of the USA but deterioration progressed over the years and in the past the record of the past forever It came to the situation that it will not be seen. Lawrence Livermore National Laboratory (LLNL), established in the United States for the development of nuclear weapons and currently conducting various energy and biotechnology research, has recovered and restored these films over the past five years, We have been archiving precious images containing the state of atmospheric nuclear tests prohibited.

750 films containing a state of confidential treatment for 55 years were declassified and some of them were released on YouTube - GIGAZINE


And this time, 62 new pictures have been newly added on YouTube as the second public release. Among them are the 1953 "Upshot / Nothole Strategy", the 1955 "Teapot Strategy", the 1956 "Red Wing Strategy", the 1958 "Hard Tuck Operation", the 1962 "Dominique Operation" Some experimental images are included.

LLNL Atmospheric Nuclear Tests - YouTube - YouTube
https://www.youtube.com/playlist?list=PLvGO_dWo8VfcmG166wKRy5z-GlJ_OQND5

By the way, the video released this time is the 65th and after of the above YouTube channel playlist.


Nuclear test"Teapot strategy"The explosion scene of the experiment name" Turk "(Turk) conducted at 5:20 am on Mar. 7, 1955. A fireball is visible after the flash, and the appearance of a mushroom climb rises. The X-shaped line seen from the right is the smoke fired to see the state of the shock wave caused by the explosion. Whether the shock wave from the explosion has arrived or not, you can see how the camera is swinging around 30 seconds of the movie.

Operation Teapot - Turk 28143 - YouTube


Film taken from the same experiment from another angle. The explosion of talc with a nuclear power output of 43 kilometers installed in a tower with a height of 152 m, soil smoke rising, and the shape of the fireball changes due to the shock wave bounced off the ground are recorded.

Operation Teapot - Turk 28141 - YouTube


The film which shot the same "Talc" explosion around fireballs as well. Films shot at a high speed of 2400 frames per second contain three protrusions spreading faster than the fireballs spread at the moment of explosion. This is because the wire that was stuck for fixing the tower was heated with a strong flash and evaporated instantaneously, resulting in "Rope trick effectWhat is called. By the way, this effect appears to be more prominent when the cable is painted black.

Operation Teapot - Turk 28115 - YouTube


Picture showing the tower where the nuclear bomb is installed and the state of the cable fixing it.

Operation Teapot - Tesla 28109 - YouTube


Moreover, the picture of the angle which can see the rope trick effect well. Here you can also see the shock wave spreading concentrically with the fireball and the state of the shock wave returning to the fireball by bouncing off the ground.

Operation Teapot - Turk 28112 - YouTube


Here is a picture of a nuclear test "Tesla" (Tesla) which was held on March 1, 1955, before "Talc". Compared with "Talc" which was a nuclear output 43 kT, "Tesla" is small as 7 kT.

Operation Teapot - Tesla 28641 - YouTube


This image is based on the nuclear test plan "Nevada Nuclear Test Site" conducted in 1953Up shot · noth hole strategyPart of "Ruth" which was carried out on March 31 of the same year. In the first experiment carried out by the Livermore Laboratory, it was a hydrogenated uranium bomb with a nuclear power output of 0.2 kiloton, but it was said that the incomplete nuclear explosion failed.

Operation Upshot - Knothole - Ruth 17208 - YouTube


The image of this color is "1958"Strategy of hard tackIn "Nutmeg" (Nutmeg) which was carried out on Bikini Atoll on May 21 of the same year. The mushroom cloud made by the impact of explosion spreads enormously and is captured.

Operation Hardtack-1 - Nutmeg 51538 - YouTube


This is the 1956 "Red Wing strategy"In the state of explosion of the nuclear bomb" Kikapoo "(Kickapoo) with a nuclear output of 1.49 kilometers on 13th June.

Operation Redwing - Kickapoo 35735 - YouTube


In 1963, between the United States, the United Kingdom and the Soviet Union, ban experiments involving nuclear explosion in the atmosphere, outside space and water excluding the undergroundPartial nuclear test ban treatyIt was tied. A nuclear test conducted in 1962, which was the previous year "Operation DominicExperiment of the experiment of the 8.3 megaton scale nuclear bomb "Housatonic" (Housatonic). I can remember the shudding when the giant fireball swells above the sky.

Operation Dominic - Housatonic 120256 - YouTube


In addition, Lawrence Livermore National Laboratory plans to further preserve and release films over the next few years, and there is a possibility that images that have never been seen will be revealed in the future.