circular_saw.ogg - https://freesound.org/people/derjuli/sounds/448133/ and clipped - CC0-1.0
gas_pump - https://freesound.org/people/karinalarasart/sounds/441419/ - CC0-1.0
gas_hiss - https://freesound.org/people/geodylabs/sounds/122803/ - CC BY 3.0
gas_vent - https://freesound.org/people/kyles/sounds/453642/ - CC0-1.0
