Penn Valley | Diane HelmsLumber companies, hardware stores, feed supplies, supermarkets, printing . gold mining declined in the 1950's and eventually all of the hard-rock mines were.hardrock mining hardware supplies,gilpin-hs | Black HawkAs the rich surface veins began to play out, deeper hard-rock mines began to yield . with gift shops and restaurants replacing hardware stores and milliners.Books about hard rock mining - Wallace, IdahoAug 12, 2017 . The historic mining town of Wallace (population 784) is nestled beneath Interstate 90, halfway between two ski and recreation areas in northern.
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