barrel
bolt
bottle
business
butane
carving
caution
commerce
compressed
container
cooking
cylinder
danger
dangerous
distribution
economy
energy
equipment
explosive
flammable
fossil
fuel
full
gas
gasoline
green
heating
industrial
industry
inflammable
liquefied
liquid
lpg
metal
metallic
natural
object
power
pressure
propane
refill
risk
safety
station
steel
storage
store
supply
tank
valve