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.
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.