Possible Clues:

• Metallic element
• Iron's preceder on the periodic table
• Element used in steels
• Among the pride of lions, problem turning to catch gazelle's tail for some element
• Element in the language of comics?
• Element used in some steels
• Metal used in some steels
• In struggling men, Agnes inserting a component of steel
• Mean somehow to keep neon in its natural state — an element
• Metal used in steel making