http://img.auctiva.com/imgdata/9/9/0/6/2/5/webimg/365821995_o.jpg
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- Pressurized smoke escaping through small
cracks an example would be window seals.
- The puffing smoke will make the
structure look like it is "breathing".
- There will be no flame visible on the
outside of the structure.
- Black smoke becomes denser gray-yellow
color.
- Smoke stained windows.
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