Keywords: history of technology historyoftechnology mining smithsonian probably public domain probablypublicdomain blackandwhite monochrome outdoor black and white SI Neg. CCC-2141. Date: 5/10/1922....Stock Coal Loader at Mine 205.Stock Coal Loader at #204.From the Consolidation Coal Company collection, National Museum of American History...Credit: unknown (Smithsonian Institution) SI Neg. CCC-2141. Date: 5/10/1922....Stock Coal Loader at Mine 205.Stock Coal Loader at #204.From the Consolidation Coal Company collection, National Museum of American History...Credit: unknown (Smithsonian Institution) |