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岩倉炭鉱 (Iwakura Tankō)

岩倉炭鉱は宮城県栗原市にあった炭鉱。 1901年操業開始。当初は亜炭の採掘を行い、最盛期には年間6,000トンの採炭量を記録した。 1970年代に入ると安価で良質な輸入炭に押され販路が縮小、経営会社は珪砂の販売などの多角化を進んだ。地質学者の一部からは「事業と呼ぶより趣味の世界」と語られるほど、緻密な合理化により経営が続けられていたが、平成九年想定以上の出水により電気施設が水没しその復旧費用を賄えない為と施設の老朽化や従業員の高齢化などの問題も重なり、2000年に事実上の閉山となった。閉山時の段階でも、炭層はまだまだ奧まで続いており掘削は可能であったという。最終的な運営会社は、創業者の子孫が経営している岩倉測量設計株式会社。

Iwakura Coal Mine

Iwakura Coal Mine was a coal mine located in Kurihara City, Miyagi Prefecture. Operation commenced in 1901. In the beginning, mining of lignite was carried out, and at the peak of the year coal consumption of 6,000 tons per year was recorded. In the 1970s, the cheap, high-quality imported charcoal pushed down by the import charcoal, the sales channel contracted, the management company diversified the selling of quartz sand etc. From a part of geologists it was said that "a world of hobby rather than calling a business" was managed by rigorous rationalization, but the electric facilities were submerged due to the floods exceeding the assumed amount in 1997 and the recovery costs Problems such as the aging of the facility and the aging of the employees due to not being able to cover it have also overlapped, and in 2000 it became a practical closing mountain. Even at the time of closing, the coal seam still continues to the inner so it was possible to drill. The final management company is Iwakura surveying design corporation which the descendants of the founder run.

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