Most of the dumping took place before 1960, and by, all dumping of radioactive wastes by the United States was terminated in 1970, after 47,500 55 gallon steel drums containers were dumped in the vicinity, with a total estimated radioactive activity of 14,500 Ci.
Most of the dumping took place before 1960 (in 1970, all dumping of radioactive wastes by the United States was terminated). According to a 1980 report by the Environmental Protection Agency, (EPA) approximately 47,500 containers, 55 gallon steel drums, were dumped in the vicinity of the Farallones, with a total estimated radioactive activity of 14,500 Ci.