boil
boiler
built
business
carbon
chemical
chemistry
chimney
coal
construction
distillery
energy
engineer
engineering
environment
factory
field
fuel
gas
gasoline
hot
industrial
industry
manufacturing
metal
night
oil
petrochemical
petroleum
pipe
pipeline
plant
pollute
pollution
processing
production
refine
refinement
refinery
smoke
steam
structure
tank
technology
tower
tube
work
worker