A 1981 military document cited by the LA Times revealed several people knew 'radioactive material was leaking out of the crater even then and would continue to do so.' But even then, there were concerns over how fit for purpose this structure really was. The most toxic waste was scooped up and dumped in the tomb, constructed on top of an unlined crater and covered with an 18-inch cap-fulfilling 'a moral obligation' on the part of the U.S., unclassified documents read by the LA Times show. According to information recently received by the LA Times, the Marshall Islands were also used as a testing ground for conventional and biological weapons following a temporary moratorium on nuclear testing in 1958. government had scattered large quantities of radioactive material across islands in the Enewetak Atoll. Runit Dome was built in the 1970s to store more than 3.1 million cubic feet of nuclear debris after years of atomic testing conducted by the U.S. Pictured: Explosion of nuclear device 'Seminole' on Eniwetok. A number of sites in the Marshall Islands were selected to be testing grounds for nuclear weapons in the 1940s and 50s.
