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坑内掘り炭鉱、坑内掘炭鉱 こうないぼりたんこう kounaiboritankou

JMdict entry #2535690

  1. noun (common) (futsuumeishi) underground coal mine

Kanji in this word

pit, hole
inside, within, between
dig, delve, excavate
charcoal, coal
mineral, ore

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