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  • Big Thunder Gold Mine
    Big Thunder Gold Mine
    (605) 666-4847
    PO BOX 653, 57751  Keystone

    Big Thunder Gold Mine (Gold Hill Lode), originally named the Gold Hill Lode, was discovered in 1882. The mining work was done by two German immigrants, Krupp and Engle. They did not know each other when they came to the Keystone area, but because they could both speak the same language, they became…