This photo shows boulders of manganese oxide ore from the Polk-Southard Mine that was located in Cushman Arkansas around 1930. This image is part of the Powell-Guard Collection at Old Independence Regional Museum.
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This photo shows boulders of manganese oxide ore from the Polk-Southard Mine that was located in Cushman Arkansas around 1930. This image is part of the Powell-Guard Collection at Old Independence Regional Museum.