Geoscience Reference
In-Depth Information
on an upper-story floor due to the fact that most toxic chemical gases are heavier than air and
will tend to settle more toward the ground floors. Building your safe room ahead of time, with
its own HEPA filtered positive pressure air supply, provides your family with a tested, highly
reliable personal protected space. If I lived in an area near a chemical plant, or a metropolitan
area that I suspected might be a terrorist target, this is the way I would go.
