big
building
chemical
chimney
climate
concrete
contamination
danger
day
dirty
disaster
ecological
ecology
energetic
energy
engineering
environment
environmental
factory
fuel
funnel
generation
generator
global
harming
industrial
industry
influence
modern
old
pipe
pipeline
plant
pollution
power
problems
refinery
sky
smoke
smokestack
steam
technology
tower
toxic
tube
urban
vapor
view
warming
waste