air
atmosphere
big
chimney
cogeneration
color
construction
ecology
effect
emission
energy
environment
environmental
exhaust
factory
fuel
fume
fumy
gas
generate
heat
high
industrial
industry
landscape
maintenance
metal
nuclear
pipe
plant
pole
pollution
power
production
reeky
sky
smog
smoke
station
steam
steel
technology
thermal
tower
vapor
warming