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April 20th,1951 Nuclear weapons detonation. On April 20th, 1951 the United States performed a nuclear bomb test. The test site was Enwetak atoll. The delivery method or operation type was tower. The test series was designated as Greenhouse. The test name was Easy. |
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April 20th,1973 Thousands of cubic meters of radioactive waste flow out of Hanford nuclear weapons complex (USA) HAnford, WA., U.S.A. - 100,000,000 gallons of atomic wastes stored in containers whose life is 30-40 years. A leak was discovered on 20th April, but wastes were still poured into the tanks, resulting in a leakage of 115,000 gallons before 8th June, when pouring stopped. Geologists point out that the area has been under water at least 4 times in the last 40,000 years, the last time being 14,000 years ago. (Work Circle Environ. Protection; Penelope Coleing) |
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April 20th,1979 Leak of highly radioactive water. Big Rock, Michigan, U.S.A. - Leak of highly radioactive water in cooling system forces indefinite shutdown of Big Rock, Michigan. (W.I.S.E. Ibid.) |
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April 20th,1979 Holland's only commercial reactor closes. Borssklen, Netherlands - Holland's only commercial reactor closes after turbine springs leak. (Nucleus, 25th July, p.17) |
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April 20th,1980 A second leak within eight days. LAWRENCE LIVERMORE, CA., U.S.A. - A second leak within eight days occurred at the Lawrence Livermore Nuclear Weapons Research Laboratory. Both leaks were in rooms where Plutonium was being kept in "glove boxes" - sealed containers used to hold lethal substances during experiments. ("The Australian", 21st April, 1980) Workers at California's Lawrence Livermore Nuclear Weapons Research Laboratory have a five times greater incidence of a virulent skin cancer, according to a study sponsored by the Federal Department of Energy and carried out by the Californian Department of Health Services. The study, which took years to complete, showed there were 19 cases of malignant melanoma among laboratory employees between 1972 and 1977. At least 4 victims have died. A widow of one victim is suing the laboratory for several million dollars damages on the grounds that negligence and carelessness led to the scientist's death. The findings are puzzling some scientists because melanoma has always been associated with ultra-violet radiation (from the sun, lamps and welding equipment etc.) ("The Age", 24/3/1980) |
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April 20th,1988 Emergency shutdown. Biblis B, Germany - Following the explosion of a switch in a 220 kilowatt line in the nuclear plant at Biblis, Unit 8 underwent emergency shutdown. (WISE 6 May 1988) |
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April 20th,1989 Explosion in gun turret. U.S.S. Iowa - An explosion on April 20 in a gun turret aboard the "USS Iowa", a US battleship armed with Tomahawk missiles, could have posed a greater danger, had the blast been stronger or in a different gun turret. The Iowa carries 32 Tomahawk sea-launched cruise missiles. ("Greenpeace-USA"; WISE-311 28/4/89). |
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