A huge mushroom cloud rises above Bikini atoll in the Marshall Islands on July 25, 1946 following an atomic test blast, part of the U.S. military’s Operation Crossroads. The dark spots in foreground are ships that were placed near the blast site to test what an atom bomb would do to a fleet of warships.
After a nuclear weapon test, Nevada, 1955
absurdonio: Exposed wiring of The Gadget, the nuclear device which exploded as part of Trinity, the first nuclear weapons test of an atomic bomb. At the time of this photo, the device was being prepared for its detonation, which took place on July 16, 1945. (U.S. Department of Defense) Yucca Flat (via When We Tested Nuclear Bombs - Alan Taylor - In Focus - The Atlantic)