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Phase 1981 Business Plan (1990-XNUMX)

1981 OctoberSun Myung Moon advocates the international highway concept (10th ICUS, Seoul, South Korea)
1982 OctoberEstablished International Highway Construction Corporation (Chairman Osami Kuboki)

OctoberStart of the first surface exploration (Northern Kyushu, Iki, Southern Tsushima)

OctoberHigashi Matsuura Peninsula, track and field club start boring (Yobukocho, 500m)
 Start of the first sound wave exploration in the assumed sea area of ​​the Japan-Korea tunnel
 Launch of the No. 52 constant Anmaru (XNUMXt)

1983 OctoberLaunch of the second Jeongan Maru (10t)

OctoberJapan-Korea Tunnel Research Institute Establishment General Meeting (Chairman Yasuo Sasa)

OctoberJapan-Korea Tunnel Research Association Kyushu Branch Establishment General Assembly (Branch Director Genkiyo Takada)

OctoberStart of the second sound wave exploration in the sea area of ​​the Japan-Korea tunnel

OctoberStart of electrical exploration and simple elastic wave exploration on land (Chinzeimachi, Saga Prefecture)

OctoberEnvironmental survey started in the assumed sea area of ​​the Japan-Korea tunnel
 Launch of the 160rd Jeongan Maru (XNUMXt) (equipped with a water gun system)
 Start of diagonal boring (Chinzeimachi, Saga Prefecture, 700m)

OctoberPurchase of research aircraft (XNUMX-seater Cessna aircraft)

OctoberStart of gravity exploration on land (Tsushima / Southern)

1984 OctoberStart of the third sound wave exploration in the sea area of ​​the Japan-Korea tunnel (Iki / East offshore)

OctoberStart of the XNUMXth sound wave exploration in the Japan-Korea tunnel area (Tsushima / northwest area)

OctoberStart of Iki / land bowling (near Sumiyoshi Shrine, 400m)

OctoberStart of Tsushima / land bowling (Koura, 70m)

OctoberStarted magnetic exploration of the sea area of ​​the Japan-Korea tunnel (Iki Suido)

OctoberStart of Tsushima / land bowling (Gozaki, 500m)

OctoberStart of second surface exploration (Tsushima / Northern)
 Start of Iki / land bowling (Yawataura, 400m)
 Start of Tsushima / land bowling (Aren, 500m)

OctoberStart of Tsushima / land bowling (Himi River, 400m)

1985 OctoberStart of Iki / land bowling (Chojabaru, 400m)

OctoberInstallation of micro seismograph (Tsushima)

OctoberStart of Iki / land bowling (Tsutsuki, 400m)

 Start of Tsushima / land bowling (Tsutsu Hospital, 630m)

OctoberStart of Iki / land bowling (Kukifuku, 500m)

OctoberStart of lessing in the first sea area of ​​the Japan-Korea tunnel

OctoberStart of Iki / land bowling (Archer Yoshitaku, 423m)

1986 OctoberStart of Iki / land bowling (Shinjo Nishitaku, 400m)

OctoberStart of Tsushima / land bowling (Kuda River, 500m)

OctoberAso Bay ・ Start of environmental survey (Tsushima)

OctoberHigashimatsuura Peninsula, track and field club boring started (Saga Prefecture, Chinzei Town, 200m)

 Start of ocean bowling (Tsushima / West Sea area, 500m)

OctoberStart of lessing in the second part of the Japan-Korea tunnel area

OctoberStart of the XNUMXst Nagoya Castle Environmental Survey (Yobuko Town, Saga Prefecture)

 Start of Tsushima / land bowling (Minemachi, 400m)

OctoberStart of diagonal boring on Kakarajima (320m)

 Start of sea trip survey (between Iki and Higashimatsuura Peninsula, 27km)

OctoberGroundbreaking ceremony for the Japan-Korea Tunnel Survey Slope (Chinzeimachi, Saga Prefecture)
 Start of Tsushima / land bowling (Nita, 500m)
 Established Korea International Highway Study Group (Chairman Yoon Seyuan)
 Established Busan Branch of Korea International Highway Study Group (Branch Director Rui Takakan)

1987 OctoberHigashi Matsuura Peninsula, track and field club boring started (Genkai Town, Saga Prefecture, 202m)

OctoberStart of the second Nagoya Castle Environmental Survey (Yobuko Town, Saga Prefecture)

OctoberEstablishment of Nagoya Meteorological Observatory (Chinzeimachi, Saga Prefecture)

 Higashi Matsuura Peninsula, track and field club boring started (Saga Prefecture, Ogawa Town, 460m)

OctoberStarted the XNUMXth sound wave exploration in the assumed sea area of ​​the Japan-Korea tunnel (Tsushima / northwest sea area)

 Start of Iki / land bowling (Ashibecho, 500m)

OctoberStart of fishery fact-finding survey (Tsushima / Aso Bay)

OctoberStart of diagonal boring (Japan-Korea tunnel survey inside the inclined shaft, 423m)

1988 OctoberHigashimatsuura Peninsula, track and field club boring started (Saga Prefecture, Chinzei Town, 130m)

OctoberHigashimatsuura Peninsula, track and field club boring started (Saga Prefecture, Chinzei Town 150m)

OctoberFirst visit to China by the International Highway Construction Corporation / Delegation

 Japan-Korea Tunnel Survey Slope ・ Start of Phase XNUMX Construction (Chinzeimachi, Saga Prefecture)

OctoberStart of fishery fact-finding survey (Tsushima / Aso Bay)

OctoberGroundbreaking ceremony for geological survey of Geojedo Island, South Korea (Geoje-gun, Sankyo-ri)

 Start of land bowling in South Korea (Geoje-gun, Sankyo-ri, 400m)
 Start of land bowling in South Korea (Geoje-gun, Takesari, 400m)
 Start of land bowling in South Korea (Geoje-gun, Nagagi-ri, 300m)

OctoberStart of land bowling in South Korea (Geoje-gun, Myeongdong-ri, 300m)

OctoberStart of land bowling in South Korea (Geoje-gun, Daesato, 400m)

 Start of land bowling in South Korea (Geoje-gun, Fuharu-ri, 332m)

1989 OctoberSecond visit to China by the International Highway Construction Corporation / Delegation (Beijing-Shenyang-Dandong)

OctoberGroundbreaking ceremony for the Japan-Korea Tunnel Tsushima Survey Slope (Izuhara Town)

 Diagonal boring of the mine started (slanted mine entrance, 200m)

OctoberJapan-Korea-China-Tokyo International Conference (co-sponsored by ISC / IHCC)

OctoberJapan-Korea Joint Report Meeting of Japan-Korea Tunnel (Seoul, Korea)

1990 OctoberAnnounced International Highway Project at the 11th World Congress of Speechists (Moscow)

OctoberSecond visit to China by the International Highway Construction Corporation / Delegation

OctoberJapan-Korea Tunnel Survey Slope / Diagonal Boring Started (Chinzeimachi, Saga Prefecture)

The 10th ICUS (Korea)

XNUMXst surface reconnaissance

Land bowling

The 10th ICUS (Korea)

XNUMXst surface reconnaissance

Land bowling

* From the 1990s to the early 2000s, it was positioned as a time to try a more concrete project approach from a rough and comprehensive point of view based on the survey materials so far, and various publicity in Japan and overseas. We have been making efforts in enlightenment activities.Based on these results, we are currently formulating a second business plan while further studying.

Notice of business succession

Since its advocacy in 1981, this project has been under the direction and supervision of the International Highway Construction Corporation.As of January 2009, the International Highway Foundation has taken over the business.

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