Photo taken on 27 December 1960, near Reggane in the southern Algerian Sahara, of the third French A-bomb explosion during the Gerboise Rouge operation, one in a series of French nuclear tests. The first French atomic bomb was tested in Reggane on 13 February 1960. Just after the bomb was detonated, a large team of technicians in anti-radiation gear had just 15–20 minutes before the radioactive fallout to recover the all-important measuring devices (seismographs) buried in the sand near the explosion site. Radioactive fallout was collected by specially equipped aircraft.