Keywords: history of technology historyoftechnology mining smithsonian probably public domain probablypublicdomain blackandwhite monochrome black and white SI Neg. CCC-3199B. Date: 11/1937....Showing variation of parting #213 mine.No. 6 Room, 1 left, 3 rt. face, 213.From the Consolidation Coal Company collection, National Museum of American History...Credit: unknown (Smithsonian Institution) SI Neg. CCC-3199B. Date: 11/1937....Showing variation of parting #213 mine.No. 6 Room, 1 left, 3 rt. face, 213.From the Consolidation Coal Company collection, National Museum of American History...Credit: unknown (Smithsonian Institution) |