blue
bottle
bottled
butane
caution
compressed
container
cooking
cylinder
danger
dangerous
distribution
energy
explosion
explosive
fence
fire
flammable
fossil
fuel
full
gas
green
heat
heavy
industrial
industry
inflammable
liquefied
liquefied petroleum gas
lp gas
lpg
man
natural
object
pressure
propane
red
refill
regulator
risk
room
station
storage
stored
supply
tank
valve
wall
work