Keywords: history of technology historyoftechnology mining smithsonian probably public domain probablypublicdomain blackandwhite monochrome black and white SI Neg. CCC-3202. Date: 11/1937....Timber hitching 3 Rt. face mine 213.Timber hitching, Mine 213.From the Consolidation Coal Company collection, National Museum of American History...Credit: unknown (Smithsonian Institution) SI Neg. CCC-3202. Date: 11/1937....Timber hitching 3 Rt. face mine 213.Timber hitching, Mine 213.From the Consolidation Coal Company collection, National Museum of American History...Credit: unknown (Smithsonian Institution) |