acid
architecture
building
carbon
chemical
chimney
construction
contamination
danger
destruction
ecology
energy
environment
environmental
factory
factory chimney
fuel
fume
gas
generate
global
hell
hellish
industrial
industry
manufacturing
oil
ozone
poison
pollute
polluting
pollution
power
production
sky
smog
smoke
smokestacks
station
steam
structure
technology
toxic
vapor
warming
waste