Keywords: history of technology historyoftechnology mining smithsonian probably public domain probablypublicdomain blackandwhite monochrome outdoor black and white SI Neg. CCC-2825. Date: 12/6/1926....Joy Loading Machine No 206.Joy Loading Machine, No. 206.From the Consolidation Coal Company collection, National Museum of American History...Credit: unknown (Smithsonian Institution) SI Neg. CCC-2825. Date: 12/6/1926....Joy Loading Machine No 206.Joy Loading Machine, No. 206.From the Consolidation Coal Company collection, National Museum of American History...Credit: unknown (Smithsonian Institution) |