Operation Polka Dot
Operation Polka Dot was a U.S. Army field test of a biological cluster bomb in the early 1950s. The test took place at Dugway Proving Ground in Utah and used the E133 cluster bomb. It was kept secret and involved filling the bombs with the biological agent simulant Bacillus globigii. The details appeared in a U.S. Army report dated July 18, 1955, which also described Operation Trouble Maker.
This page was last edited on 2 February 2026, at 08:57 (CET).