Keywords: history of technology historyoftechnology mining smithsonian probably public domain probablypublicdomain blackandwhite monochrome black and white SI Neg. CCC-3015. Date: 5/20/1931....Mine 207 Fire Pump & Car.Mine 207 Fire Pump and Car .From the Consolidation Coal Company collection, National Museum of American History...Credit: unknown (Smithsonian Institution) SI Neg. CCC-3015. Date: 5/20/1931....Mine 207 Fire Pump & Car.Mine 207 Fire Pump and Car .From the Consolidation Coal Company collection, National Museum of American History...Credit: unknown (Smithsonian Institution) |