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HISTORY OF COMPANY

1925
Karoku Mine started business as a sole proprietor at Fukagawa, Tokyo. He manufactured mechanical rail signalling equipment and installed them on site.
1933
MI-NE SEISAKUSHO GSK was founded as a limited partnership company.
Appointed as a designated manufacturer and constructor by the Ministry of Railway.
1947
Karoku Mine founded MI-NE SEISAKUSHO CO., LTD capitalized at one million Japanese Yen, and became the first president.
1957
Kyushu Plant was built at Koga, Kasuya, Fukuoka (Now Koga city in Fukuoka) and production was transferred.
1958
Development of MI-NE's original alumino-thermic welding method (MT1) was accomplished.
1962
MI-NE engaged in welding work at Tokaido Shinkansen construction by alumino-thermic welding method (MT2).
Supplied turnouts and expansion joints to Shinkansen (50T rail).
1974
Kan-ichi Mine became the second president.
1975
Capital was increased to a hundred million Japanese yen.
1979
MI-NE formed a technical alliance with Elektro-Thermit (Germany) with regard to alumino-thermic welding (SkV method). The method was named "Goldsummit welding", and sales of materials and welding service were started.
1983
MI-NE engaged rail welding at Seikan Tunnel.
1985
Development of Pressure-Welded Crossing was accomplished, and installed at Kokura station for test.
1987
MI-NE manufactured track expansion equipment for buffer girders for Honshu-Shikoku Bridge, installed it on site, and engaged rail welding.
The method of Tension Gas Pressure Welding was established.
1991
Hidetaka Mine became the third president.
1992
Research and Development department was established.
1993
MI-NE supplied special turnout for the mobile launcher platform of Tanegashima Space Center, and also engaged.
1998
Supply of Steel Sleeper Turnout was accelerated.
Movable Wing Crossing (noise reduced crossing) was developed and installed at Hakata operation department. It was also installed at Koishikawa depot at Tokyo Metro later.
2001
Kyushu plant was certified to ISO9002.
2003
Sales department, Welding department, Design department, R&D department were certified to ISO9001.
Welding Training Centre was founded.
2009
Toshiaki Mine became the fourth president.
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