environmental
attention
barrel
biohazard
black
can
chemical
container
contaminated
danger
dangerous
destruction
disaster
drum
energy
environment
exclamation point
explosive
flammable
fuel
gallon
garbage
gas
graphic
hazardous
icon
illustration
industrial
isolated
material
nobody
nuclear
oil
pollution
radiation
radioactive
sign
skull
substance
symbol
threats
toxic
uranium
warning
waste
white