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[1] [2] The role of radiation was downplayed, especially to assuage fears that a nuclear explosion had occurred. The debris from the explosion was ultimately disposed of in the ocean. The debris from the explosion was ultimately disposed of in the ocean.
The first target of nuclear weapons, the Mark I atomic bomb. The target was the Aioi Bridge across the Ōta River; it exploded several hundred yards off. Hiroshima was a city of 250,000, suffering 70,000 or so deaths immediately and up to 126,000 by the end of the year. Nagasaki, Japan
The United States conducted around 1,054 nuclear tests by official count, including 216 atmospheric, underwater, and space tests. [1] [notes 1] Most of the tests took place at the Nevada Test Site (NNSS/NTS) and the Pacific Proving Grounds in the Marshall Islands and off Kiritimati Island in the Pacific, plus three in the Atlantic Ocean.
The nuclear explosion was carried out in open ocean outside of Enewetak. This nuclear test codenamed Wahoo was the first underwater test in the Operation Hardtack series. This test could be considered a continuation of the Wigwam nuclear blast (a deep water nuclear test 500 nautical miles (930 km; 580 mi) off the coast of San Diego). [9]
Energy from a nuclear explosion is initially released in several forms of penetrating radiation. When there is surrounding material such as air, rock, or water, this radiation interacts with and rapidly heats the material to an equilibrium temperature (i.e. so that the matter is at the same temperature as the fuel powering the explosion).
The Soviet nuclear submarine K-129 sank with a crew of 98 due to an explosion of unknown cause. The International Atomic Energy Agency stated that two nuclear warheads from K-129 were located in the Pacific 1,230 miles from Kamchatka at coordinates 40°6'N and 179°57'E at a depth of 6,000 metres (20,000 ft), and lists them as recovered.
The explosion yielded 15 Mt of TNT, far exceeding the expected yield of 4 to 8 Mt of TNT (6 predicted), [6] and was about 1,000 times more powerful than each of the atomic bombs dropped on Hiroshima and Nagasaki during World War II. The device was the most powerful nuclear weapon ever detonated by the United States.
Video of the test—12 second intro. Operation Wigwam [1] involved a single test of the Mark 90 "Betty" nuclear bomb.It was conducted between Operation Teapot and Project 56 on May 14, 1955, about 500 miles (800 km) southwest of San Diego, California. 6,800 personnel aboard 30 ships were involved in Wigwam.