1)Historical state of Hokkaido in modern Japan Hokkaido Island is located in the northern part of Japan. In its exploitation, in Pre-Meiji era,they had restricted in the coast regions of Hokkaido,after 1870 year (Meiji 2), Kaitakushi, one part of Meiji Government ,made a large scale finance from the big social economical companies, Mitui, Mitubishi, Sumitomo, and introduced the big technology (so to speak colonial exploitation technology) from USA, and therefore succeeded a rapid development of Hokkaido conseqently. 2)Hokkaido coal mines under the contineous development for 100 years In 1890, Yubari coalmine was opened (Hokkaido TankouKisen,2nd scale in Japan).After that for about 100 years, Akabira(Sumitomo), Bibai(Mitubishi), Sunagawa(Mitsui),Ashibetu(Mitsui)(these are center of Hokkaido ),Yubetsu(Mitubishi)-Kushiro-Taiheiyo(Mitusi ) coalmines were opened respectively and they reached amount of 120 coalmines in number. 3)Technological characterestics of coalmining in Hokkaido and production shere in Japan Their technological characterestics were the large scale production (2mil. ton per year), deep shaft(1000m under surface), high power winding moter (3000hp over ),water purifiing machine, full electric system, these big coalmine companies ,by using of big finance(Mitui etc) and USA and Germany coal minig technology imported, succeeded a regional enlarged technology establishment in Hokkaido conseqently.Annual production shere of Hokkaido coalmines was 30% of Japan (before world war ll), according to technological development ,Hokkaido coalmine companies reached 60%(after world war ll), and high performance of coal mine technology in Japan(world lebel).But under the policy of the energy exchange by Japan government after 1970's , many coalmines (over 900 coalmines) were closed except Kushiro-Taiheiyo coalmine and many coalmining equipments were demolished rapidly. 4)Conclusion In order to maintain and preserve and re-use these Japanese only one Hokkaido heritages (ex Yubari(largest coalmine museum),Ponbetsu(largest shaft in Asia),Haboro( only one winding tower) ,Akabira(most useful shaft in Japan) as a system heritage, auther underline that it is necessary to make a preservation method as Taipei coalmine museum and establishing of the national collaboration system among study society, government (national and regional),preservation group ,sightseeing company as our enterprise(Sorachi-Yama-nokioku Jigyou as Eco-Museum and action network for 15 years continuing ).