air
chemical
chimney
co2
company
cooling
dioxide
dioxin
distill
distillation
distillery
energy
environment
environmental
equipment
factory
fuel
gas
gasoline
global
greenhouse
industrial
industry
metal
oil
oil storage tanks
pernis
petrol
pipe
plant
pollute
pollution
power
production
rafine
rafinery
refinery
sky
smoke
smokestack
stack
steam
steel
technology
tower
warming
working