background
barrel
bottle
business
butane
caution
commerce
compressed
container
cylinder
danger
dangerous
economy
energy
equipment
flammable
fuel
gas
gasoline
handle
heating
heavy
industrial
industry
isolated
liquid
lpg
market
metal
metallic
natural
object
petroleum
power
pressure
production
propane
risk
safety
steel
storage
store
supply
tank
useful
white