area
barrel
bottle
can
chemical
container
corrosive
danger
dangerous
dirty
drum
ecology
environment
explosive
factory
flammable
fuel
gallon
garbage
hazard
hazardous
industrial
industry
junk
label
laboratory
management
material
metal
plastic
poison
pollution
product
protection
recycle
recycling
red
risk
safety
site
sticky
storage
store
substance
symbol
tank
toxic
warning
waste