Keywords: history of technology historyoftechnology mining smithsonian probably public domain probablypublicdomain blackandwhite monochrome black and white SI Neg. CCC-2894. Date: 1/8/1930....Motor & Loaded Cars.Motor and Loaded Cars 205 Mine.From the Consolidation Coal Company collection, National Museum of American History...Credit: unknown (Smithsonian Institution) SI Neg. CCC-2894. Date: 1/8/1930....Motor & Loaded Cars.Motor and Loaded Cars 205 Mine.From the Consolidation Coal Company collection, National Museum of American History...Credit: unknown (Smithsonian Institution) |