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| May 1990 | The Investigative Report on Facts Regarding the Atomic Bomb Victims (A Study of the Deceased), which was initiated by the Ministry of Health and Welfare in 1985, is made public. The government then begins talks on measures that can be taken to mourn those who were killed by the atomic bombs. |
| May 1991 | The Committee for Basic Planning of the Memorial Facilities for the Atomic Bomb Victims (headed by Chairman Mori) is established. |
| June 1993 | The findings of the Committee for Basic Planning of the Memorial Facilities for Atomic Bomb Victims are released. Included are the outlines of the fundamental concepts for such facilities, details on concrete measures to be taken, discussion of the locations for such facilities, and information on methods of operation and administration. |
| December 1994 | The enactment of the Atomic Bombing Survivors’ Law which begins with a preamble calling for eternal peace and recognition of the preciousness of the sacrifice made by the atomic bomb victims. Article 41 stipulates that projects for the commemoration of peace be instituted. In voting on the proposal for the law, the Lower House issues a secondary resolution stating that “Plans are to proceed to establish a memorial facility for victims of the atomic bombing at the earliest possible date, and efforts will be made to ensure that this facility is one which will be in keeping with the feelings of the atomic bombing survivors and the relatives of those who lost their lives.” |
| January 1995 | In the Report on Basic Plans for Facilities Memorializing the Atomic Bombing Deceased, the function, composition and operation of such facilities are discussed. |
| November 1995 | The Preparatory Committee for the Opening of the Peace Memorial Halls for the Atomic Bomb Victims is established (under Chairman Mori). |
| April 1996 | An Investigative Committee for Construction Difficulties with the Peace Memorial Hall for the Atomic Bomb Victims (the local board is headed by Chairman Tsuchiyama) is established for Nagasaki City. |
| February 1997 | Nagasaki City’s Requests Regarding the Peace Memorial Hall for the Atomic Bomb Victims is submitted to the Ministry of Health and Welfare. Included are requests that the names of the atomic bombing victims be registered and that all operating expenses be covered by the national government. |
| June 1997 | The Preparatory Committee for the Opening of the Peace Memorial Halls for the Atomic Bomb Victims issue a report on “points to be heeded in the fundamental plans for the Peace Memorial Hall for the Atomic Bombing Victims (Nagasaki)”. |
| September 1998 | The final report of the Preparatory Committee for the Peace Memorial Halls for the Atomic Bomb Victims is issued. Included are a draft of the hall’s inscription message, concrete details on displays, and descriptions of operational methods. |
| November 2000 | Construction begins on the Nagasaki National Peace Memorial Hall for the Atomic Bomb Victims. |
| December 2002 | Construction is completed on the Nagasaki Peace Memorial Hall for the Atomic Bomb Victims. |
| May 2003 | The 1st Investigative Study Group of Plans for the Management of the Peace Memorial Halls for the Atomic Bombing Victims is established (headed by Chairman Mori). |
| July 2003 | The Nagasaki National Peace Memorial Hall for the Atomic Bomb Victims opens. |