This groundbreaking investigation delves into previously classified archives from the French defense ministry—approximately 2,000 documents, declassified only in 2013 after a protracted legal battle. Until now, these records had never been systematically analyzed. We organized, categorised, and structured them into a searchable database, making them accessible to test survivors, researchers, and the broader public. Our inquiry also involved over 50 interviews with key witnesses, including 18 Polynesian atoll residents, 16 former military personnel, as well as judges, scientists, and civil society organizations in both French Polynesia and mainland France.