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大場鉱山 (Ōba Kōzan)

大場鉱山は青森県むつ市にあった鉱山。 葛沢川上流に位置し、昭和24年4月より硫化鉄鉱を中心に採掘が行われた。昭和46年9月閉山。 鉱山採掘により強酸性の鉱水が流出しているため、坑排水処理事業として消石灰を使用した中和処理が行われている。

Okaba mine

Oba mine is a mine in Mutsu City, Aomori Prefecture. Located in the upper stream of the Katsurazawa River, mining was conducted mainly in iron sesquioxide since April 1954. Closed mountain in September 1967. Since strongly acidic mineral water is flowing out through mining mining, neutralization treatment using slaked lime is underway as a mine drainage treatment project.

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