燃やす
environmental
black and white
building
chemical
chimney
coal
dusk
ecology
electric
electrical
electricity
emission
energy
environment
exhaust
factory
fuel
fume
gas
generate
generator
heavy industry
industrial
industry
infrastructure
manufacturing
monochrome
oil
petrochemical
plant
pollute
polluting
pollution
power
power plant
powerplant
production
smoke
smokestack
stack
station
steam
structure
sunset
tank
technology