尾去沢鉱山跡
採掘対象とされた鉱脈はおよそ 560 条 24 鉱脈群に上り、大規模な鉱脈では走向延長 1,000 m を超えました。 坑道は深さ 30 m 毎に水平坑道が展開され、総延長は 800 km に達します。
1978 年閉山
Osarizawa Mine
The ore deposits consisted of 24 ore vein groups with a total of approximately 560 veins, and some of them had a length of over 1,000 meters. The mine tunnels were dug horizontally at 30 meters intervals of depth, and their total length reached 800 kilometers.
closure in 1978