Date: 18:30 UTC 24/08/1968
Type: Baloon @520
France's attempts to produce a staged thermonuclear weapon came to fruition with Canopus, also the largest French atmospheric test. Like most of the French tests, the three tonne device was suspended from a balloon. The device used a lithium-6 deuteride secondary jacketed with HEU that caused massive contamination of the atoll, requiring it to be quarantined for six years.