Keywords: history of technology historyoftechnology mining smithsonian probably public domain probablypublicdomain blackandwhite monochrome outdoor vehicle train locomotive black and white SI Neg. CCC-3146. Date: 5/25/1936....Goodman Slabbing Machine #222 Raised with Est. (?) (Mine-206-6A.Good. Slabbing Machine, 206-6A.From the Consolidation Coal Company collection, National Museum of American History...Credit: unknown (Smithsonian Institution) SI Neg. CCC-3146. Date: 5/25/1936....Goodman Slabbing Machine #222 Raised with Est. (?) (Mine-206-6A.Good. Slabbing Machine, 206-6A.From the Consolidation Coal Company collection, National Museum of American History...Credit: unknown (Smithsonian Institution) |