Keywords: history of technology historyoftechnology mining smithsonian probably public domain probablypublicdomain blackandwhite monochrome outdoor black and white SI Neg. CCC-3201. Date: 11/1937....Timber hitching 3 Rt. face mine 213.Timber Hitc hing, Mine 213.From the Consolidation Coal Company collection, National Museum of American History...Credit: unknown (Smithsonian Institution) SI Neg. CCC-3201. Date: 11/1937....Timber hitching 3 Rt. face mine 213.Timber Hitc hing, Mine 213.From the Consolidation Coal Company collection, National Museum of American History...Credit: unknown (Smithsonian Institution) |