CIA: OPERATION CASTLE

Video of detonation:

https:// upload.wikimedia.org/wikipedia/commons/transcoded/b/b4/Operation_Castle_test.ogv/Operation_Castle_test.ogv.240p.webm

https:// www.cia.gov/library/readingroom/docs/CIA-RDP84-00313R000100120004-4.pdf

https:// en.wikipedia.org/wiki/Operation_Castle