Related Clues:

• Fulton's propellant
• Iron output
• If you're tired, you've lost it
• Sauna feature
• Geyser output
• Kind of trail or lock
• Propellant for Casey Jones
• Water vapor
• Robert Fulton power source
• Become furious
• Calliope power
• Calliope need
• Cloudy diffused matter
• Contrail content
• Exhaust, perhaps