Related Clues:

• So superlative, large size and incombustible
• Protective fabric is most appropriate during a call in emergency
• When the elite ordinary seaman's on the serpentine
• It will contain a fire
• A call for help about worst insulating material
• Arsenic, of the highest quality, and osmium could be the cause
• Like the finest old style fireproof material
• Fibrous material
• Fire extinguisher?
• Like top sailor's material
• Insulating material, like finest used by sailor
• A call for assistance after swallowing foremost poisonous material
• Insulating material in Lyons is restricted by court orders
• Base's upset with drunkard overturning building material?
• When premium's above average size, it's fireproof