秋田県エコタウンセンター
エコタウンセンター 秋田県北部エコタウン 地球と未来のために 産業遺産・環境産業観光プログラム 環境・リサイクル施設の見学お申し込み

 秋田県の鉱山の歴史とエコタウンの取り組み

Age Osarizawa Mine Kosaka Mine Hanaoka Mine Northern Akita Eco-Town
708
Legend has it a gold mine was discovered.      
1062
Legend has it the Abe clan mined alluvial gold in Kazuno.    
1105
Legend has it gold from Osarizawa Mine was used for the Golden Hall of Chusonji Temple in Iwate.    
1598
Samurai Kita Juzaemon discovered and developed the Shirane Gold Mine (Kazuno).    
1604
It is said that the Tokugawa Shogunate received a huge amount of taxes thanks to the gold mine's high production.      
1628
  Towada Silver Mine was discovered.    
1754
Made a contract with 18 merchants of Morioka. (Now the capital of Iwate Prefecture.)      
1789
Direct management by the Nanbu clan      
1861
  Kosaka Mine was discovered.    
1865
Copper production exceeds 600 tons      
1869
  The Meiji Government nationalizes the Kosaka Mine.    
1881
  Introduction of Augustin's method of earthy ore smelting.
Kosaka Mine becomes top producer of silver in Japan.
   
1884
  The Meiji Government grants control of Kosaka and Towada mines to Fujita Group.    
1886
    Development of Hanaoka Mine Tsutsumizawa  
1893
Mitsubishi Limited Partnership is established and runs the mine. Innai and Kosaka mines are ranked No. 1 and 2 in silver production.    
1864
Success in zinc smelting by the wet electrolytic method.    
1897
The first power plant is completed.
The mine is lit with electric lights.
   
1900
Success in processing black ore.    
1905
Kosaka Mining Main Office is built.    
1907
The mine becomes No. 1 producer in Japan.    
1910
  Korakukan theater is built.    
1930
    Hanaoka Mining establishes an ore processing plant in Kamiyama to separate copper, lead, and zinc concentrates.  
1931
    Hanaoka Mining succeeds in black ore floatation.  
1945
  Dowa Kogyo is launched and runs Kosaka and Hanaoka mines. Dowa Kogyo runs the mine.  
1951
    Black ore flotation facility is completed.  
1962
  Mining begins at Uchinotai.    
1965
Mitsubishi stops mining, abolishing the department in charge of smelting at Osarizawa.      
1966
The mine changes hands.   Mining begins at the Matsumine deposit.  
1970
       
1971
       
1972
       
1973
       
1978
Closure of Osarizawa mine.      
1982
The closed mine is turned into a tourist spot -- Mine Land Osarizawa.      
1985
       
1989
Kosaka Smelting Plant spins off Dowa and becomes Kosaka Smelting & Refining.    
1990
Mining stops at Uchinotai. Hanaoka Mining suspends mining at Ezuri.  
1994
  Hanaoka Mining suspends mining at Matsumine.  
1995
     
1998
      Launch of a Recycle Mine Park project.
1999
      Northern Akita Eco-Town Plan is approved.
2000
      Eco-Recycle Co. begins operating a home appliance recycling plant.
2001
      Kosaka Smelting begins forming a recycling and smelting center and operating a metal vapor recovery furnace.
2002
  Kosaka Smelting Plant spinned off Dowa and becomes Kosaka Smelting & Refining Co., Ltd.   Akita Wood Co. begins producing new construction material from waste plastic.
2003
      Amendment to Northern Akita Eco-Town Plan is approved.
2006
     

Akita Ecoplash Co. begins producing secondary products using coal ash and waste plastic.
Koden Project, a project for recycling small used electrical household appliances, is launched in Odate.

2007
Osarizawa Mine is designated as one of Japan's modern industrial heritage sites. Korakukan and Kosaka Mining Main Office are designated as heritage sites of industrial modernization.   Koden Project is carried out by all the municipalities in the eco-town.
2008
Mine Land Osarizawa is renamed Historic Site Osarizawa Mine.    

Koden Project is carried out across the prefecture.
A project to promote tourism of industrial heritage sites and the environmental industry.

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