air
atmosphere
billowing
blue
business
chemical
chimney
climate
coal
complex
dioxide
ecology
ehime
energy
environment
evening
facilities
factory
gas
heavy
imabari
industrial
industrial area
industrial zone
industry
isolated
japan
leaden skies
oil
oil refining factory
ozone
petrochemical
petroleum
petroleum refinery
pipe
plant
pollution
power
production
refinery
scenery
shikoku
sky
smog
smoke
smokestack
steam
tower
vomit
white