In this episode Kevin McComb, 3M’s Technical Services Manager for the Personal Safety Division in Australia and New Zealand returns for the last episode in our confined space series. In this final chapter they focus their attention on supplied air respiratory in confined spaces. Confined spaces not only present toxic gases, but also the lack of oxygen. Where the lack of oxygen exists filtering respirators won’t cut it, this is where self-contained breathing apparatus, or airline apparatus must be utilised. Basically, we are taking our own supply of air with us into the confined space area and operating from a much higher degree of safety.