上菱鉱山は群馬県桐生市にあった鉱山。 マンガンが採掘された。 最盛期には月産400t近くの出荷があり、開山以来約15000tのマンガン鉱が掘り出されたという。 坑口跡やズリ跡が残る。
Shinko mine was a mine in Kiryu City, Gunma prefecture. Manganese were mined. It is said that there are shipments of nearly 400 tons per month at its height, and about 15000 tons of manganese ore was excavated since the opening of the mountain. Remains of the wellhead and slippage remain.