environmental
air
chemical
chimney
company
cooling
dioxide
dioxin
distill
distillation
distillery
drill
drilling
energy
environment
factory
fuel
gas
gasoline
global
greenhouse
holland
industrial
industry
kyoto
offshore
oil
petrol
plant
pollute
pollution
production
refine
refinery
rigs
rotterdam
sea
sky
smoke
smokestack
stack
steam
technology
tower
warming
working