Left to right, top to bottom: Bernd and Hilla Becher, Hochofen, Hainer Hütte, Siegen, Deutschland (Blast Furnace, Hainer Hütte, Siegen, Germany), 1961 Frank Thiel, Stadt 2/51/D (Berlin), 2001 Peter Stackpole, Bridgeman in skip box waits while final rivets are placed in the tower top, 1934–36 Lewis Hine, Derrick and workers on girder, Empire State Building, 1930–31 Peter Stackpole, Bridgemen completing the assembly of the hammerhead derrick, 1934–36 76