UNSPECIFIED – CIRCA 1908: Twin Tracks Loaded with Earth Removed from Panama Canal Bed; Steam Shovels Operate to Load Rocks Blasted away to build the Thoroughfare (Photo by Buyenlarge/Getty Images)
UNSPECIFIED – CIRCA 1908: Twin Tracks Loaded with Earth Removed from Panama Canal Bed; Steam Shovels Operate to Load Rocks Blasted away to build the Thoroughfare (Photo by Buyenlarge/Getty Images)