Operation Polka Dot was a U.S. Army test of a biological cluster bomb during the early 1950s.
Operation Polka Dot was a field test of the E133 cluster bomb undertaken at Dugway Proving Ground in Utah during the early 1950s.
[1][2] The operation was detailed in a July 18, 1955 U.S. Army report that also detailed Operation Trouble Maker.
[1] The operation was classified "secret"[2] and involved filling the munitions with the biological agent simulant, Bacillus globigii.
[1] This military-related article is a stub.