Kosaka mine

Kosaka, Japan · built 1861

The Kosaka mine (Kosaka Kozan) was one of the largest copper, lead and zinc mines in Japan. The mine is located in Tōhoku region of northern Japan in the town of Kosaka, Akita Prefecture. The mine had reserves amounting to 30 million tonnes of ore grading 2.84% lead, 8.48% zinc, 1.1 million oz of gold and 177.3 million oz of silver.

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Mine data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).

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