environmental
arctic
background
barrel
biohazard
brown
careless
chemical
container
corrosive
crude
danger
diesel
dirty
drum
dump
ecology
environment
fuel
garbage
gas
gas station
global
grunge
hazardous
industrial
industry
keg
metal
oil
old
petrol
petroleum
pile
poison
poisonous
pollution
recycling
rust
rusty
stack
steel
storage
tank
toxic
trash
used
waste