TOKYO, July 23 (AP) – (Kyodo)—The United States used atomic power cooperation with Japan in the 1950s to ease the Japanese public’s aversion to nuclear weapons and remedy their “ignorance” about nuclear power, declassified U.S. papers showed Saturday.
The U.S. move, which eventually led the world’s only country to have suffered atomic bombing to embrace nuclear power, was initially devised to counter the antinuclear sentiment among the Japanese public after a tuna fishing boat, the Fukuryu Maru No. 5, was exposed to radioactivity from a 1954 U.S. hydrogen bomb test while operating at Bikini Atoll in the South Pacific.
The documents, collected by Kyodo News at the U.S. National Archives, show that President Dwight Eisenhower’s administration, concerned about Japan’s possible exit from the Western camp, accelerated cooperation with Japan in atomic energy technology to contain antinuclear and anti-U.S. sentiment among the Japanese.
In a memorandum to U.S. Secretary of State John Dulles, dated May 26, Eisenhower said he was “concerned about the Japanese situation,” and asked Dulles to help “have a better idea of what it is now possible for us to do to further our interests in Japan.”
In a top-secret memo to Eisenhower, the State Department replied: “The Japanese are pathologically sensitive about nuclear weapons. They feel they are the chosen victims of such weapons.”
To overcome it, the department proposed compensating the crew of the fishing boat, providing the Japanese with information about radioactivity, and conveying to then Prime Minister Shigeru Yoshida the United States’ regret over the Fukuryu Maru incident.
Noting that several exchange projects were under way, the memo concluded that “in the long run, scientific interchange is the best remedy for Japanese emotion and ignorance and we intend to push such projects.”
In a secret memo titled “Bikini Incident and Nuclear Matters” and dated Oct. 19, 1954, the State Department said the incident placed “the most severe strain” on bilateral ties since the end of World War II, leading to heightened resentment toward the United States and fear of nuclear weapons.
It went on to float the possibility of providing Japan with atomic reactors in the future, saying: “It is important to our relations with Japan that we seek to remove the strong Japanese notion that atomic and nuclear energy is primarily destructive. We should accordingly attempt at an early point to include Japan in bilateral and multilateral actions intended to develop peaceful uses of atomic energy.”
In November that year, atomic energy documents that ran to about 200,000 pages were provided to Japan. Japanese scientists’ visits to U.S. atomic energy installations also began.