| 1981 | November Reverend Myung Moon advocated the International Highway Initiative (10th ICUS, Seoul, South Korea) |
|---|---|
| 1982 | AprilEstablishment of International Highway Construction Corporation (Chairman Osumi Kuboki)
Start of first surface exploration in June October - Drilling begins on the land area of Higashimatsuura Peninsula (Yobuko Town, 500m) |
| 1983 | MarchLaunch of the Second Joan Maru (10t)
May : Japan-Korea Tunnel Study Group founding meeting (Chairman: Yasuo Sasa) July Japan -Korea Tunnel Research Society Kyushu Branch Establishment General Meeting (Branch Chief: Genkiyo Takada) August : Start of second sonic exploration in the Japan-Korea tunnel sea area September: Start of onshore electrical exploration and simple elastic wave exploration (Chinzei Town, Saga Prefecture) October - Start of environmental investigation of the proposed Japan-Korea tunnel area - Purchase of research aircraft (6-seater Cessna) in November Start of land gravity exploration in December |
| 1984 | AprilStart of 3rd sonic exploration in Japan-Korea tunnel sea area (Iki, east offshore)
May : Start of the 4th sonic exploration in the Japan-Korea tunnel sea area (Tsushima/northwest sea area) June Iki land bowling begins (near Sumiyoshi Shrine, 400m) Tsushima track and field bowling begins in July Magnetic exploration of the Japan-Korea Tunnel sea area begins in August Tsushima track and field bowling begins in September October Start of second surface exploration (Northern part of Tsushima) in December (Himigawa, 400m) |
| 1985 | JanuaryStart of Iki land bowling (Chojahara, 400m)
March: Installation of microseismograph (Tsushima) April: Start of land bowling in Iki (Tsutsujo, 400m) Start of Tsushima land bowling (Mametsu Naiin, 630m) Start of land bowling in Iki in July August - Japan-Korea Tunnel Sea Area - Lessing begins in the first stage in October (Skyshot, 423m) |
| 1986 | JanuaryStart of Iki land bowling (Shinshiro Nishi-Taku, 400m)
Tsushima track and field bowling begins in February March Aso Bay environmental survey begins (Tsushima) April Higashi Matsuura Peninsula track and field bowling begins (Saga Prefecture, Chinzei Town, 200m) Start of ocean boring (Tsushima/west sea area, 500m) July - Japan-Korea tunnel sea area - Lessing begins in the second stage August : Start of the first Nagoyaura environmental survey (Yobuko Town, Saga Prefecture) Start of Tsushima land bowling (Minecho, 400m) September: Start of diagonal boring on Katara Island (320m) Start of sea survey (between Iki and Higashimatsuura Peninsula, 27km) October : Groundbreaking ceremony for Japan-Korea Tunnel Survey Incline (Chinzei Town, Saga Prefecture) |
| 1987 | JanuaryHigashimatsuura Peninsula track and field bowling begins (Saga Prefecture, Genkai Town, 202m)
February: Start of the second Nagoyaura environmental survey (Yobuko Town, Saga Prefecture) April Nagoya Weather Observatory established (Chinzei Town, Saga Prefecture) Higashimatsuura Peninsula track and field bowling begins (Saga Prefecture, Ogawa Town, 460m) May: Start of the 5th sonic survey in the area where the Japan-Korea tunnel is assumed (Tsushima/northwest area) Start of Iki land bowling (Ashibe Town, 500m) Start of fishing survey in August in November (inside the Japan-Korea tunnel survey diagonal shaft, 423m) |
| 1988 | AprilHigashimatsuura Peninsula track and field bowling begins (Saga Prefecture, Chinzei Town, 130m)
May Higashi Matsuura Peninsula track and field bowling begins (Saga Prefecture, Chinzei Town 150m) First visit to China by International Highway Construction Corporation delegation in July Japan-Korea Tunnel Survey Diagonal - Start of second phase construction (Chinzei Town, Saga Prefecture) Start of fishing survey in September October: Groundbreaking ceremony for geological survey on Geoje Island, South Korea (Sangyo-ri, Geoje-gun) Start of track and field bowling in Korea (Samgeori, Geoje-gun, 400m) Start of land bowling in Korea in November Start of land bowling in Korea in December Start of land bowling in Korea (Buchun-ri, Geoje-gun, 332m) |
| 1989 | MaySecond visit to China by the International Highway Construction Corporation delegation (Beijing-Shenyang-Dandong)
July : Groundbreaking ceremony for the Japan-Korea Tunnel Tsushima Survey Incline (Izuhara Town) Start of diagonal boring of the same shaft (diagonal shaft entrance, 200m) September Japan-Korea-China-Tokyo International Conference (co-hosted by ISC and IHCC) November Japan-Korea Joint Report Meeting on the Japan-Korea Tunnel (Seoul, South Korea) |
| 1990 | AprilAnnouncing the International Highway Project at the 11th World Congress of Speakers (Moscow)
Second visit to China by International Highway Construction Corporation delegation in July August - Japan-Korea tunnel survey, diagonal shaft and diagonal boring started (Saga Prefecture, Chinzei Town) |
10th ICUS (Korea)
First ground survey
land bowling
10th ICUS (Korea)
First ground survey
land bowling
*The period from the 1990s to the early 2000s was positioned as a time to attempt a more specific project approach from a general and comprehensive perspective based on research materials, etc., and various promotions and promotions were conducted domestically and internationally. We have been working hard to raise awareness. Based on these results, we are currently formulating the second business plan while continuing to study further.
Since its proposal in 1981, this project has been carried out under the direction and supervision of the International Highway Construction Corporation, but in January 2009, a new general incorporated foundation, the International Highway Foundation, took over the project.
