Possible Clues:

• "Man of ___" (Superman flick)
• Met Al at the slippery end of the street
• Novelist Danielle
• Ruhr Valley product
• At the end of the street the twister is so metallic it sounds as if one might pinch it
• Girder composition
• Structural metal alloy
• Looking back, let's include Egyptian leader of band, for one
• Iron/carbon alloy
• Looking back, let's include Turkish leader of band, for one