4. State of preservation/conservation a) Current situation (Diagnosis)	Repair work on the Hiroshima Peace Memorial, Genbaku Dome has been carried out on two occasions in 1967 and in 1989-90, for the purpose of preserving the Dome in the state as it was immediately after the atomic bombing. There is no need for any major preservation work in the near future. Moreover, the property is surrounded by a fence both for protection of the property and for prevention of possible injury to unauthorized visitors.
b) Agents responsible for preservation/conservation of cultural properties	The City of Hiroshima: 1-6-34 Kokutaiji-machi, Naka-ku, Hiroshima City, Hiroshima Prefecture
c) History of preservation /conservation	The Hiroshima Peace Memorial, Genbaku Dome has been preserved intentionally in its incomplete form for the purpose of keeping alive the memory of the historic event. Though there have been no significant structural changes made, the possibility of collapse as a result of deterioration due to weathering has led the City of Hiroshima to conduct preservation work on the Dome twice under the supervision of specialists. This work was intended to leave the Dome in the condition it was reduced to at the time of the atomic bombing. The first round of preservation work, carried out in 1967, was based on the results of a survey performed by Hiroshima University on the Dome structure's tensile strength. Epoxy resins were used as binding agents and only those parts that were in danger of collapsing were reinforced with steel; portions of the masonry structure which had deteriorated were re-built with the original bricks. The second round of preservation work took place between 1989 and 1990. Again surveys were carried out in advance by specialists, and the work itself was done under expert advice. The purpose of this work was mainly to replenish synthetic resins and mortar and to replace reinforcing steel plates. After the second restoration it was decided to carry out examinations of the state of the Dome once every three years, checking for peeling cement plaster, deteriorated mortar joints, the corrosion of reinforcing steel plates, the extent of subsidence or inclination, and the extent of deterioration of synthetic resin reinforcements. Appendix 11 : Chronology of Hiroshima Peace Memorial, Genbaku Dome (former Hiroshima Prefectural Industrial Promotion Hall) Additional Reference Material 7 : Hiroshima Peace Memorial, Genbaku Dome; Record of Preservation Work (see file No.1 for summary (English); refer to file No.3 for complete reports (Japanese))