accident

air

architecture

chemical

chemistry

chimney

coal

coke

construction

cooler

danger

destroy

dioxide

distillation

ecology

electric

energy

environment

environmental

equipment

factory

fuel

furnace

gas

global

heavy

industrial

industry

manufacture

metal

oil

pipe

plant

polluted

pollution

power

production

refinery

sky

smoke

station

steam

steel

technology

tower

toxic

warming

work