Then he went on to the plate-mill, where giant hammers resounded, and steel plates of several inches' thickness were chopped and sliced like pieces of cheese. Here the spectator stared about him in bewilderment and clung to his guide for safety; huge travelling cranes groaned overhead, and infernal engines made deafening clatter upon every side. It was a source of never ending wonder that men should be able to work in such confusion, with no sense of danger and no consciousness of all the uproar.