Related Clues:
- What a full moon mitigates
- Mineral involved in much litigation
- Old construction danger
- Fire-resistant material dangerous to health
- Boss set a non-burning material up
- Period of no light
- Fireproof material, now known to be dangerous
- Better to light a candle than to curse it, they say
- Absence of light
- Fire-resistant material, a danger to health
- Fireproof material, dangerous to health
- Absence of illumination
- 'Hello . . . . . . . ., my old friend' (Simon and Garfunkel song)
- Fire-resistant material, injurious to health
- Fireproof substance, dangerous to health