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| Keywords: history of technology historyoftechnology mining smithsonian probably public domain probablypublicdomain blackandwhite monochrome outdoor black and white SI Neg. CCC-1804. Date: 4/14/1919....Mine Moss or Growth.Mine Moss or Growth #203 Mine 20 reg..From the Consolidation Coal Company collection, National Museum of American History...Credit: unknown (Smithsonian Institution) SI Neg. CCC-1804. Date: 4/14/1919....Mine Moss or Growth.Mine Moss or Growth #203 Mine 20 reg..From the Consolidation Coal Company collection, National Museum of American History...Credit: unknown (Smithsonian Institution) | ||||
