This was the seed of the background Asimov would create for his next novel, The Caves of Steel, a background that would also be evident in the later Lucky Starr novels.
steel | Bethlehem Steel | U.S. Steel | Tata Steel | Steel | Steel Pulse | stainless steel | steel mill | David Steel | Mogao Caves | European Coal and Steel Community | Ellora Caves | Steel Magnolias | Man of Steel | British Steel | BlueScope Steel | American Institute of Steel Construction | Ajanta Caves | Jones and Laughlin Steel Company | Carnegie Steel Company | Steel Pole Bath Tub | Steel Pier | Steel Authority of India | Danielle Steel | The United States Steel Hour | Steel mill | steel guitar | Republic Steel | pedal steel guitar | Man of Steel, Woman of Kleenex |
As John H. Jenkins has noted, Asimov's novels typically are set either on Earth (Pebble in the Sky, The End of Eternity, The Caves of Steel), or on fictional extrasolar planets (The Currents of Space, The Naked Sun, the Foundation series).