Alloys of common metal; common metals, unwrought or semi-wrought; sheets and plates of metal, sheet iron, tinplate, iron, building materials of iron, copper, zinc, tin, brass, aluminum; mesh wires, sheaf binders of metal; transportable buildings of metal, floors of metal, staircases, bars for metal railings, scarecrows, roofing of metal, fences of metal, portable metal platforms, telephone booths of metal, cubicles of metal, transportable greenhouses of metal, swimming pools and diving boards...