architecture
brick
burner
catalyst
chemical
chemistry
chiming
chimney
company
complex
contrast
corporate
corporation
distill
emission
energy
engine
environment
environmental
exterior
factory
fuel
fume
funnel
gas
heavy
industrial
industry
landscape
manufacture
metal
mill
oil
old
outdoors
outside
petrochemical
petroleum
pipe
plant
pollution
power
refinery
retro
site
sky
structure
technology
tube
vapor