Keywords: history of technology historyoftechnology mining smithsonian probably public domain probablypublicdomain blackandwhite monochrome outdoor black and white SI Neg. CCC-1809. Date: 4/14/1919....Pump Room Betwen #12 Air Ways Main Loaded.Pump Rm. Bet. #12 Aerways & Main Loaded #203 Mine No. 9 right 15 spec..From the Consolidation Coal Company collection, National Museum of American History...Credit: unknown (Smithsonian Institution) SI Neg. CCC-1809. Date: 4/14/1919....Pump Room Betwen #12 Air Ways Main Loaded.Pump Rm. Bet. #12 Aerways & Main Loaded #203 Mine No. 9 right 15 spec..From the Consolidation Coal Company collection, National Museum of American History...Credit: unknown (Smithsonian Institution) |