Related Clues:

• Material not to be made light of?
• It's heat-resistant and most effective in an emergency
• A call for help, boxing top material considered hazardous
• A call for help about finest incombustible material
• It's difficult to fire one protected by this
• A cry for help about ultimate in dangerous material
• French is used in orders to restrain dangerous material
• Note on greatest footballer with second woman in ship - it's dangerous material
• A call for help, being without optimal fire retardant
• Answer distress signal covering most useful and dangerous in-house material
• Incombustible material, while the most suitable, old and perilous, ultimately
• Fireproof material
• Answer distress signal about most useful and dangerous in-house material
• Incombustible material
• Frowned-upon construction material