... 1966, France conducted its 1st atmospheric nuclear weapon test (left), code-named Aldebaran, at its Centre d'Expérimentation du Pacifique near Mururoa in French Polynesia; earlier testing had been conducted in Algeria. According to Atomic Forum:
Apparently the local populations were not notified about the radiological situation.
Documents recently made public state that four days after the test, drinking water was measured to contain six times normal levels of radioactivity on Mangareva. Unwashed lettuce contained 666 times the normal level. Six days after the test, levels in drinking water were 50 times above normal background levels.