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Blue Peacock, renamed from Blue Bunny and originally Brown Bunny, was a British tactical nuclear weapon project in the 1950s.
The project's goal was to store a number of ten-kiloton nuclear mines in Germany, to be placed on the North German Plain and, in the event of Soviet invasion from the east, detonated by wire or an eight-day timer[1] in order to "… not only destroy facilities and installations over a large area, but … deny occupation of the area to an enemy for an appreciable time due to contamination …
https://en.wikipedia.org/wiki/Blue_Peacock
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