alcohol
barrier boom
barrier gate
business
care
caution
chemical
chemical container
concept
danger
dangerous
emergency
engine
environment
ethyl
factory
fire
flame
flammable
flammable sign
fuel
gas
gasoline
hazard
hazardous
health
industrial
industry
label
laboratory
liquid
lorry
material
methyl
object
oil
prevent
protect
protection
red
risk
safety
sign
single
stop
symbol
tank
toxic symbol
warning