as the plutonium remained in this form, it could not become critical. However, when the explosives were detonated, the blast's force compressed the plutonium into a solid critical mass, thus causing a chain reaction and releasing its destructive force. "Fat Man" exploded about 1500 feet over Nagasaki, but was about two miles off target when released. (JIC - p.55). Despite this fact, the explosion leveled the city in an instant andkillea nearly 40,000 people. One interesting incident different from Hiroshima's experience, was the fact that the Nishiyama District near to Nagasaki that was yp,yered direct radiation from the explosion, was exposed to an estimated 30 rads of radiation fror fallout which drifted into that area. The people still living in that area have been studied since 1945 and are the subject of a new report still unpublished at the time of the writing of this report. JAPAN: COMMITTEE FINDINGS As outlined in its Interim Report of May 16, 1972, the Special Joint Committee Concerning Rongelap and Utirik Atolls traveled to Tokyo, Japan on June 16, 1972. The Committee included: Senator Olympio T. Borja, Chairman and members Representative Hans Wiliander and Timothy Olkerill; informant/ interpreter Representative Ataji Balos; Acting Legislative Counsel Mamoru Nakamura (now Deputy Attorney General), the committee's staff member, and Dr. Masao Kumangai, Deputy Director of Health Services (now Director) who acted as liaison from the Executive Branch. The Committee first made contact with the U.S. Embassy and held a meeting with officials of the Health and Welfare Ministry of the Jananese 1O14b93 47