air
air pollution
blast furnace
brown
building
carbon dioxide
chemical
chemical plant
chimney
co2
coking
coking plant
dark
dirty
duisburg
energy
environment
environmental damage
factory
ferne
flare stack
fossil fuel
fumes
germany
global business
global warming
illuminated
industrial
industrial building
industry
light
night
oil
oil industry
petrochemical plant
petrochemistry
plant
pollution
power
power line
power lines
ruhr area
ruhrgebiet
shiny
skyline
smoke stack
steam
steaming
steel plant
tall
tower