nuclear test

nuclear test

1.2 kt Jangle Uncle 1951 shallow underground nuclear test

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Description

The 1.2 kt Jangle Uncle 1951 shallow underground nuclear test fireball venting into the atmosphere. The first ever underground nuclear explosion. This film shows the light flash, cone of cratered debris, and the formation of the radioactive base surge from the base of the collapsing dust column and throwout plumes, over a period of 35 seconds. For a summary of the effects of Jangle Sugar and Jangle Uncle, please see weapon test report WT-414 "Operation JANGLE - Summary Report: Weapon Effects", declassified PDF courtesy of Uncle Sam: https://www.osti.gov/opennet/servlets/purl/16004395-wIpk7T/16004395.pdf and DASA 1251 / ADA079309, "Compilation of fallout patterns" http://oai.dtic.mil/oai/oai?verb=getRecord&metadataPrefix=html&identifier=ADA079309 for full close-in and far-out fallout pattern data. WT-414 also includes the blast, thermal, ground shock and fallout radiation dose rate histories at a large number of instrument stations both upwind and downwind from each test.