building
chemical
chemistry
chimney
chimneys
climate
coast
construction
dirty
distill
distillation
economy
emissions
energy
engineering
environment
facility
factory
fuel
fumes
funnels
gas
global warming
harbor
heavy industry
industrial
industrial architecture
industry
manufacture
petrochemical
petroleum
pipe
pipes
plant
pollution
power
production
purification
refinery
silo
sky
smokestack
smokestacks
steam
tank
technology
toxic
tube
warming