architecture
atmosphere
building
chemical
cloud
concept
conservation
construction
contamination
danger
dangerous
destruction
disaster
distillation
doomsday
energy
environment
factory
fuel
fumes
gasoline
global
impact
industrial
industry
machinery
manufacture
metal
oil
petrochemical
pip
pipeline
pollution
power
refinery
sky
smoke
smokestack
stack
steel
storage
structure
sunrise
sunset
tank
technology
tower
toxic
tube
warming