air
building
chimney
complex
contamination
dangerous
decadence
decay
dirty
dust
facility
factory
gas
gasmask
hazard
heavy
human
industrial
industrialized
industry
iron
man
mask
measure
metallurgy
old
plant
pollution
produce
production
protective
research
risk
risky
rusty
smog
smoke
smoky
steel
structure
substance
toxic
worker