Mine Top Annual Production Coordinates Associated Town Owner Dates Coalfield Iwate mine[ 2] 39°53′06″N 141°37′52″E / 39.885°N 141.631°E / 39.885; 141.631 Iwaizumi, Iwate ? Hokutan Horonai coal mine 1500.000 43°13′16″N 141°54′32″E / 43.221°N 141.909°E / 43.221; 141.909 Mikasa Hokutan 1879–1989 Ishikari Hokutan Ikushunbetsu Coal Mine 200.000 43°15′40″N 141°58′05″E / 43.261°N 141.968°E / 43.261; 141.968 Ikushunbetsu Hokutan 1885–1957 Ishikari Sumitomo Ponbetsu coal mine 1500.000 43°15′54″N 141°57′36″E / 43.265°N 141.960°E / 43.265; 141.960 Mikasa Sumitomo 1902–1971 Ishikari Sumitomo Yayoi coal mine 43°15′32″N 141°56′17″E / 43.259°N 141.938°E / 43.259; 141.938 Mikasa Sumitomo 1905–1970 Ishikari Mitsubishi Bibai coal mine 1600.000 43°20′02″N 141°58′08″E / 43.334°N 141.969°E / 43.334; 141.969 Bibai Mitsubishi 1913–1972 Ishikari Mitsui Bibai coal mine 1000.000 43°20′02″N 141°55′01″E / 43.334°N 141.917°E / 43.334; 141.917 Bibai Mitsui 1918–1963 Ishikari Hokutan Yūbari coal mine 2000.000 43°03′50″N 141°59′06″E / 43.064°N 141.985°E / 43.064; 141.985 Yūbari Hokutan 1890–1977 Ishikari Hokutan Mayachi coal mine 700.000 42°58′16″N 142°04′16″E / 42.971°N 142.071°E / 42.971; 142.071 Yūbari Hokutan 1905–1987 Ishikari Mitsubishi Ōyūbari coal mine 1000.000 43°05′49″N 142°05′42″E / 43.097°N 142.095°E / 43.097; 142.095 Yūbari Mitsubishi 1906–1973 Ishikari Hokutan Heiwa coal mine 1000.000 43°01′01″N 141°59′28″E / 43.017°N 141.991°E / 43.017; 141.991 Yūbari Hokutan 1937–1975 Ishikari Mitsubishi Minami Ōyūbari coal mine 43°01′44″N 142°05′24″E / 43.029°N 142.090°E / 43.029; 142.090 Yūbari Mitsubishi 1966–1990 Ishikari Hokutan Yūbari Shin coal mine 42°59′02″N 142°01′01″E / 42.984°N 142.017°E / 42.984; 142.017 Yūbari Hokutan 1970–1981 Ishikari Hokutan Manji coal mine 500.000 43°08′02″N 141°59′31″E / 43.134°N 141.992°E / 43.134; 141.992 Manji Hokutan 1905–1976 Ishikari Hokutan Miruto coal mine Miruto Hokutan 1917–1969 Ishikari Hokutan Kakuta coal mine Kakuta Hokutan 1927–1953 Ishikari Sumitomo Akabira coal mine 1900.000 43°32′53″N 142°03′22″E / 43.548°N 142.056°E / 43.548; 142.056 Akabira Sumitomo 1895–1993 Ishikari Moshiri coal mine Akabira Yūbetsu 1918–1969 Ishikari Toyosato coal mine Akabira Toyosato Mining Company 1937–1954 Ishikari Hokutan Akama coal mine 43°33′11″N 142°02′53″E / 43.553°N 142.048°E / 43.553; 142.048 Akabira Hokutan 1938–1973 Ishikari Sorachi coal mine 1500.000 43°30′40″N 142°03′07″E / 43.511°N 142.052°E / 43.511; 142.052 Utashinai Hokutan 1890–1995 Ishikari Hokutan Kamui coal mine 500.000 Utashinai Hokutan 1891–1971 Ishikari Sumitomo Kami Utashinai coal mine 300.000 43°31′26″N 142°03′07″E / 43.524°N 142.052°E / 43.524; 142.052 Utashinai Sumitomo 1894–1988 Ishikari Sumitomo Utashinai coal mine 800.000 Utashinai Sumitomo 1905–1971 Ishikari Mitsubishi Ashibetsu coal mine 300.000 Ashibetsu Mitsubishi 1914–1964 Ishikari Yuya coal mine 200.000 Utashinai Yuya 19**–1965 Ishikari Meiji mining kami Ashibetsu coal mine 100.000 Ashibetsu Meiji mining 1935–1963 Ishikari Takane coal mine 200.000 Ashibetsu Takane 1938–1967 Ishikari Mitsui Ashibetsu coal mine 1700.000 Ashibetsu Mitsui 1939–1992 Ishikari Mitsui Sunagawa coal mine 1600.000 43°28′01″N 142°00′47″E / 43.467°N 142.013°E / 43.467; 142.013 Kamisunagawa Mitsui 1914–1987 Ishikari Mitsui Oku Naie coal mine 460.000 Naie Mitsui 1947–1966 Ishikari Shōwa coal mine Numata Shōwa 1930–1969 Rumoi Asano Uryū coal mine Numata Shōwa 1930–1968 Rumoi Haboro coal mine Happoro Shōwa 1948–1970 Rumoi Yoshio coal mine 33°38′00″N 130°42′40″E / 33.633466°N 130.711221°E / 33.633466; 130.711221 X Asō Chikuhō Kamimio coal mine 33°37′16″N 130°42′59″E / 33.620987°N 130.716355°E / 33.620987; 130.716355 X Asō Chikuhō Tsunawaki coal mine 33°38′09″N 130°43′49″E / 33.635951°N 130.730315°E / 33.635951; 130.730315 X Asō Chikuhō Miike coal mine 33°00′50″N 130°27′22″E / 33.014°N 130.456°E / 33.014; 130.456 Ōmuta Mitsui 1872–1997 Miike Mitsi Ikeshima Coal Mine 32°53′06″N 129°36′04″E / 32.885°N 129.601°E / 32.885; 129.601 Ikeshima Mitsubishi 2002 Nishisonogi Mitsubishi Takashima Coal Mine 32°40′N 129°45′E / 32.66°N 129.75°E / 32.66; 129.75 Takashima Mitsubishi 1984 Nishisonogi Mitsubishi Hashima coal mine 32°37′41″N 129°44′17″E / 32.628°N 129.738°E / 32.628; 129.738 Hashima Mitsubishi 1869–1974 Nishisonogi Iriomote Coal Mine 130.000 Iriomote Mitsui 1886–1960 Okinawa Utara Coal Mine 30.000 Iriomote Marusan Mining Company 1936–1943 Okinawa 
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